algebra help: the problem -3+5=5-3y+4y?
114816
-3+5=5-3y+4y       \n   2=5+y\n  2-5=y \n   -3=y\n because...          2=5-3(-3)+4(-3)\n                     2=5+9-12 \n                     2= 14-12         \n                     2=2
888367
You need to give some directions.  What is the problem asking you to do?\nNote: The person below is incorrect.  (4+3x)^5 does NOT equal\n4^5 + (3x)^5
630233
(4/x+2)+3-4/x = (2/x-3)+3-4/x\n5 = 2/x-4/x\nx(5) = x(2/x-4/x)\n5x = 2-4 = -2\n(5x)/5 = (-2)/5 = -0.4\nx = -2/5 = -0.4
709836
2x -  4y = -5\n3x + 4y = -15\n\n5x = -20\n\nx = -20/5                                       \n\nx = -4\n\n*************************\n\n2(-4) - 4y = -5\n\n-8 - 4y = -5\n\n- 4y = -5 + 8\n\n- 4y = 3              \n\ny = -3/4\n\n**************************\n2 (-4) - 4 (-3/4) = -5                                        \n\n-8 - (-3) = -5           \n\n&\n\n3 (-4) + 4 (-3/4) = -15                           \n\n-12 + (-3) = -15
516994
The trick is to substitute a known true equation. I used 2+3=5, but any true equation will work.\n\nSubstitututing in the first equation you get\n4(2) - 3(2) + 4(3) - 3(3) = 4(5) - 3(5)\n\nwhich is 8 - 6 + 12 - 9 = 20 - 15\n\nor 5 = 5.\n\n\nIn the second equation you get\n4(2) + 4(3) - 4(5) = 3(2) + 3(3) - 3(5)\n\nwhich is 8 + 12 - 20 = 6 + 9 -15\n\nor 0 = 0.\n\n\nHence, a + b - c = 0.  In the next equation, you are dividing by zero, which is not permissible in math.  If a +  b - c had not been equal to zero, then this would have been possible.
881909
No, I don't think you are right.  I assume this is a system of simultaneous equations and you're trying to find a solution set.\n\n4x - 12y = 5\n-x + 3y = -1\n\nFirst, multiply the second equation by 4 on both sides, giving\n\n4x - 12y = 5\n-4x + 12y = -4\n\nNext, add the two equations, giving\n\n4x-4x +12y -12y = 5 -4\n0x + 0y = 1\n\nThere are no solutions (x,y) for which this is true, so the solution set is the empty set.\n\nTaking the solution set you've determined, (5,0), putting that into the first equation gives\n4*5 -12 * 0 = 5\n20 -0 = 5 or 20 = 5, which is not true, so (5,0) cannot possibly be a solution.\n\nYou've made several errors, as follows:\n\n4x-12y=5  OK\n-x+3y= -1 OK\n\n-x=3y+-1 NO!, should be -x = -3y + -1 or x = 3y +1\n4(3y+-1)-12y=5 OK\n12y+-4-12=5 NO!, should be 12y -4 -12y = 5 or -4 = 5 \n0y=1 I have no idea how you got this\ny=0 NO!, if 0y =1, y is not 0, there is no y such that 0y =1\n-x=12y+5  I have no idea how you got this\n-x=12(0)+5 I understand how you got this, but y does not equal 0\n-x=0+5 OK\n-x=-5 previously you had -x = 0 + 5 , which was wrong but if it was right, you should get x = -5, not -x = -5\n\nOMG
19519
=3(5+4x)-3x(5+4x)\n=15+12x-15x-12x^2\n=15-3x-12x^2
1120847
We have 3X+4Y = 16 (1)\nY - 3X = 11 (2)\n\nAdding (1) and (2)\n\nY + 4Y = 27\n\nor\n\n5Y = 27 --> Y = 27/5 = 5 + 2/5 = 5.4\n\nreplacing in (2)\n\n27/5 - 3X = 11\n\ntherefore\n\nX = (11-5.4)/(-3) = -5.6/3
704941
The second equation can be rewritten as:\n3x + 2y = -1\nMultiply both sides by 2\n6x + 4y = -2\n6x + 5y = -7 (this is the first equation)\nSubtract the first equation from the second one.\ny = -5\nNow, plug the y = -5 into the second equation:\n3x +2(-5) = -1\n3x - 10 = -1\n3x = 9\nx = 3\nSo your solution is x = 3 and y = -5
924395
-3x + 4y = 11  ~add 3x to both sides~\n4y = 3x + 11  ~ divide by 4 on both sides~\ny = 3/4x + 11/4
736590
7(5y+5x) = 105\nopen brackets first\n\n35y+35x=105\n\ndivide everything by 35\n\ny+x=3\n\nmake y the subject\n\ny=3-x
516161
x-y+3x-5y+3=0\n\n4x - 6y + 3 = 0\n\n4x + 3 = 6y\n\n2x/3 + 1/2 = y
1174662
2(x-4y+1)+3(-2+y-2)\n2x-8y+2-6+3y-6\n2x-8y+3y-6-6\n2x-5y-12\n\n2x-5y-12= answer\n\nHope this helps you.
859744
(x + 4y)(x - 4y)\nI answered 2 of your questions. Do the rest of the questions yourself.
818056
3x - 5y = 7\n5y = 3x - 7\ny = (3/5)x -7/5\nA line parallel to it is y = (3/5)x + b\n(6 , -7) on it, so -7 = (3/5)*6 + b\n-35 = 18 + 5b\n5b = -53 and b = -53/5\nThe wished line is y = (3/5)x - 53/5 or\n5y = 3x -53\n\nTh
800881
as per the question :\n2*3*5*y=2+3+5+y,\nthat makes it \n30y=10+y,\ntherefore \n   29y=10\nand y=10/29\ny=0.3448276\nhope this solves ur problem...\nhave a nice day....
162979
From y=-3x-3 and y=x+5 you have -3x-3=x+5 so\n-3x-x=5+3\n-4x=8\nx=-2\nNow y=x+5=-2+5=3\nThe solution is (-2,3).