Is there a way, by cross multiplication, to determine if one fraction is greater than another?
344212
At first glance, if the top left times the bottom right is A, and the other cross is B, then A > B, means the right fraction was larger.\n\nI couldn't come up with a quick counter.  Maybe you can.
398086
alright - the fractions you have given me are called unlike fractions which means they have a different denominator. to compare fractions the first thing you need to do is make them like(same denominator) -now,a fraction remains the same if you multiply the numerator and denominator with the same number. So look at your denominators-3,5,4,8. you need to find a number that is a common multiple for all these numbers-if you look at it, you dont see any immediate number as such-so just multiply all of these numbers to get their common multiple(ideally you should look for the lowest common multiple) which gives 480. now,multiplying the numerators with the corresponding numbers we get the following fractions: 320/480,192/480,360/480,300/480.\nnow that you have all the like fractions, though these may look different, they are actually same as the original fractions that you gave me. all you have to do now is arrange them in ascending order of numerators which gives:\n192/480 , 300/480 , 320/480 , 360/480\nnow writing the corresponding original values,your answer is:\n2/5 , 5/8 , 2/3 , 3/4\n\nthis is one method,another method involves direct division and then comparing the value, but you will get the same answer
812981
1/2^x < 0.01 \nthen multiply both sides by 2^x\n1 < 0.01 2^x\nnow divide both sides by 0,01:\n1/ 0.01 < 2^x\n100 < 2^x\n~
525953
X = 24/Y  Just start plugging in Y and getting X, there are lots of possibilities, unless you restrict it to just whole numbers.
968663
in case of conversaions on multiplication and division r possible(remember)\nthink of decimal value of any no as highest(remeber)....than binary,octal and hexadecimal..\ndecimal 2 binary=higher 2smaller..which mean u have 2 carry out division by 2....(division makes result smaller)\nhexadecimal2decimal=smaller 2 higher...which means u have 2 carry out multiplication by 16.....(multiplication makes result bigger)
926866
it really doesnt matter...\nyou could do a x b then the answer times c\nb x c and then the answer times a\nor c x a and then the answer times c\n\nif you have a calculator just enter it as a x b x c\n\nno matter how you multiply them you will get the same answer
446269
Just put the question from Mathmatters 2 whether it is even or odd on Yahoo! Answers and you will find the answer in different methods within seconds.
940700
When we see the word 'is', we can often substitute =.\nWhen we see the word 'of', we can call that multiplication.\n'what number' is simply an unknown number, so call it x.  75% can be written as 75/100, or .75.  So the above statement can be written this way:\n\n150 = .75 x\n\nFrom here, use simple algebra - divide both sides by .75 to get the answer.
1088429
Any demonstration of this false fact will be flawed, and often uses a hidden division by zero\n\nfor instance:\na and b are real numbers different from zero:\na = b\n\na^2 = ab\na^2 - b^2 = ab - b^2\n(a - b)(a + b) = b(a - b)\n\nhence: \na + b = b,\n2b = b, and:\n2 = 1\n\nHere, i divided by "(a-b)", which is illegal since a -b =0
213107
If you mean the largest proper fraction with 1 at the numerator, the answer is 1/2\n(the larger the denominator, the smaller the value)\n\nOtherwise, there is no such thing as a "larger fraction", if you don't give other appropriate specifications.
751280
multiplication\n\n\nDoug
914486
just plug -1.5 in for x and see if it equals 1.5.       \n2 X -1.5 = -3                  -3 does not equal 1.5\nso the answer is false
890832
Gary, that's a good one, but one mistake...\nyou said that a=b, thus you cannot divide by (a-b) b/c that equals zero, and you cant divide by zero.
101082
(x-1)/4 > 3\nx-1 > 12\nx > 13
605811
As Lauren said, it's 1/x.\n\nMemorize this. It will be very useful.
698714
Assuming you mean S=(c-b)/(b-a) rather than c-1-a...\n\nMultiply both sides by (b-a) to get S(b-a)=c-b\nMultiply the S through to get Sb-Sa=c-b\nAdd Sa+b to both sides to get Sb+b=c+Sa\nFactor out b to get b(S+1)=c+Sa\nDivide both sides by (S+1) to get b=(c+Sa)/(S+1)\n\nKeep in mind this only holds true for b not equal to a because then S would have no value.\n\nIs that what you're looking for?
165476
How about (a+c)/(b+d)  ? more interesting!!\n\nbtw this only work when a/b != c/d