Multiplication of alegbraic fraction?
930900
(6x^) * (x^ +x -12) / (4x^y -12xy) * (3x^ +12x)\n\nif you mean ^ as   x^2 or    x squared\n\n(the number after ^ represents exponent ie. 2x^2 is= 2x squared\n\nthen the answer should be\n\n6x^4 +6x^3 -72x^2 / 12x^4y + 48 x^3y -36x^3y - 144x^2y\n\n2x^2  (3x^2 +3x -36)  /  12x^2y  (x^2 +x -12)\n\n2x^2  (3x  +12) (x -3)  /  12x^2y  (x +4) (x -3)\n\n2x^2  (3x  +12) / 12x^2y (x +4)\n\n(3x +12) / 6y (x+4)\n\n3 (x + 4) / 6y (x +4)\n\n3 / 6y\n\n1 / 2y\n\n0r\n\n0.5y
955805
That simplifies to 3[2x-1]>12\n\n[2x-1]>4\n\n2x-1>4    2x-1<-4\n\nx>5/2  or x<-3/2\n\nWhen you have absolute values, you have to look at both ends of the spectrum
885409
A number that can be written as a fraction.
933454
30 over 4x^2\n\nremember the rule with adding fractions with the same denominator is that you keep the denominators as they are, and only add the numerators.
56508
first, do 2 to the 12th power (exponents take precedent over multiplication) which is 4096. Then multiply that by 86 and get 352256.  It's quite simple, really.
123496
You have to use the BODMAS rule.. Brackets OF Division Multiplication Addition & Subtraction (BODMAS)\n\n20 + 5[6+5(4x2-5)]x2+4\n\nLet us resolve the inner most bracket (4x2-5)\nThere is no bracket, so do the Multiplication first 8 - 5 = 3\n\nso the expression becomes: \n20+5[6 + 5(3)]x2+4\n\nNext we do the [6+ 5(3)] bracket where again multiplication comes before addition.. [6+ 15] = [21]\n\n20+5[21]x2+4\n\nThis is the slightly tricky part.. we use the BODMAS rule again to resolve the multiplication first:\n5[21]x2 = 5x21x2 = 5x42 = 210\n\nThe problem is now a simple addition 20 + 210 + 4 = 234
1048355
Get you calculator.  Multiply by 1.4.
134746
There is a nice tutorial here: http://www.bmcc.org/nish/MathTutorials/Fractions/index.html
235381
in dividing fractions, you just multiply them by its reciprocal.\n\nso \n\n[(x+5) / (16x)]  * [ (4x ^2) / [(3x -2)] \n\nperform the operations: \n\n[ (x+5) / 4 ] * [ x / (3x-2) ]\n\nthe answer is:\n\n[x(x+5)] / [ 4(3x-2) ]
258044
divide the exponent by two
884297
Grab a caluclator and add.\nLet's see...the whole numbers are\n52 + 6 + 5 + 4 + 8 + 12 + 10 + 13 + 12 + 15 + 7 + 26 = 170\nNow add the fractions\n1/2 + 1/2 + 1/2 + 3/4 + 1/2 + 1/2 = 1 + 1/2 + 3/4 + 1 = 3 1/4\n170 + 3 1/4 = 173 1/4
833702
Do you mean (2x^2 + 3x + 1/ 2x^2 + x - 3) for your first fraction?  I'm going to assume you do.\n\nFirst, factor each numerator and denominator:\n\n2x^2 + 3x + 1 = (2x+1)(x+1)\n\n2x^2 + x - 3 = (2x-3)(x+1)\n\n4x - 4 = 2(2x-2)\n\nNow let's look out our multiplied fraction, rewritten using our factors we just found:\n\n[ (2x+1)(x+1)2(2x-2) ] / [ (2x-3)(x+1)(2x+1) ]\n\nNotice we can cancel out the (2x+1)'s and the (x+1)'s, to get:\n\n2(2x-2)/2x-3\n\nANSWER:   2(2x-2)/2x-3
605811
As Lauren said, it's 1/x.\n\nMemorize this. It will be very useful.
164104
maybe :\n\nKa = 1.3*10^-2
441409
Do the multiplication as if the decimal point wasn't there.  In this case, the problem becomes 69 times 38, and your answer would be 2622.\n\nThen, when you're done, count the number of decimal places after the point, in both of the numbers you're multiplying.  In this case, it would be one - the 8 in 3.8.\n\nThen count that same number of spaces from the end in your answer, and add the decimal point in that spot.  That would change your answer to 262.2.\n\nHere's another example:\n9.7 times 4.3\nChange it to 97 times 43\nThe result is 4171\nCount the numbers after the decimals - this time it's two - the 7 in 9.7, and the 3 in 4.3\nCounting back two from the end of 4171 gets us an answer of 41.71
417900
Two very important things to know:  Anything times 1 is itself, and anything divided by itself equals 1.  So to create equivalent fractions, you can multiply or divide the top and the bottom by the same number without changing it's basic value.\n\nTry 3/4.  Pick any number, say 5.  5/5 is 1 because anything divided by itself is 1.  So, remembering that you can multiply anything by 1, you could multiply 3/4 by 5/5.\n\n3/4 * 5/5 = 15/20.  Now on a calcualor enter 3/4.  It's .75.  Now enter 15/20.  Also .75\n\nTo reduce fractions it works the same way.  Look at 8/12.  2 goes into both 8 and 12, so you can divide top and bottom by 2 without changing the value of the fraction.  8/2 is 4 and 12/2 is 6 so 8/12 is also 4/6.  Now 2 goes into both of those again, so if you do it again 4/2=2 and 6/2=3.  So 8/12 = 4/6 = 2/3.  If you put all of these into a calculator you will get .66666repeating for all 3 of them.
990473
Start with demonstrating the multiplication of fractions through physical models.\n\nSplit a rectangle in half.  That is 1 x 1/2... because you are counting that one thing 1/2 time.\n\nThen split the 1/2 into 1/2.  1/2, counted 1/2 time, is 1/4.  See it?\n\nOK, so... through whole numbers you have already demonstrated (and they should already have shown true comprehension of the idea) that division is the inverse of multiplication. So...\n\n\n1/2 divided by 2/3 is the same as 1/2 x 3/2 because that is the inverse. Division of whole numbers is a reduction of value... division of fractions is an increase of value.\n\nAlso, try this with decimals.\n\n1/10 divided by 4.\n\n1/10 divided by 4/1.\n\n1/10 x 1/4 = 1/40.\n\n1/40 = 0.025.\n\n   ____\n4 |0.1     = 0.025.\n\n25 x 4 = 100\n\n2.5 x 4 = 10.0\n\n.25 x 4 = 1.00\n\n.025 x 4 = 0.100\n\nStart to see the pattern now?