solve for x and y in 5311x +7571?
924615
X = 1.42553191       y = 0\n\nthat's the answer
1061869
5y+2x=-4--------(1)\ny=3x-7-----------(2)\nSubstitute the value of y from (2) into (1), we get\n5(3x-7)+2x=4\n15x-35+2x=4\n17x-35=4\n17x=39\nx=39/17\nnow, y=3(39/17)-7=-2/17
543795
x+1=y\n2x+4y=46\n2x+4(x+1)=46\n2x+4x+4=46\n6x=42\nx=7\ny=8
836116
Let x and y be your numbers.  Your equations, therefore, are the following:\n\nx+y = 72\nx-y = 12\n\nDo you need to actually solve for x and y as well, or just set up the equations?  If you also need to solve, then write your two equations one on top of the other, then subtract to get an equation in one term only:\n\nx + y = 72\nx - y = 12\n----------------\n0x + 2y = 60\n\nSo, 2y = 60, which means y = 30\n\nNow substitute y=30 into one of the original equations to solve for x:\n\nx + y = 72\nx + 30 = 72\nx = 72  30 = 42\n\nSo your two numbers are 30 and 42\n\n~ ♥ ~
826583
Yes, this is a difficult one.\nI'll keep trying, but don't hold your breath.\nAll I can say so far is that I could find\nonly one solution : (x, y) = (7,1).\nThere do not seem to be any more\nsolutions with x >= 8, and this is what\nneeds to be proved. So good luck with\nfinding someone who can do this.
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.
1182929
7x+27 over (x+9)(x-9)
714041
10x+4y+4\n\nor can be written as y= -2.5x-1
19785
if x2-11x+28=0\nthen (x-7)(x-4)=0\nx=7 and x=4
408462
to solve such a system in general, what you do is this: take the first equation, solve it for x treating y as you would a constant. In your case, this is x = 4 + y.\n\nThen, take your expression for x and substitute it everywhere you see x in the second equation; in your case you get 3 *(4+y) + 2y = 7.\n\nSolve this now 1-variable equation for y, once you find y (in this case, -1).\n\nSubstitute the value of y into either equation, and you get the value of x (3 in this case).
143223
a) (6x-7y)(6x+7y)\nb) y(4xy-7)\nc) (x-8)(x+3)
413913
x=0,2,3,4 and y=1,-1,0,3
387063
X=[-(30y-433)]/1232\nY=[-(1232x-433)]/30
763084
or solve equation for x and y components separately. \nfor x    0 +3+?=0 \nfor y    3+0 +?=0
969004
1) Simply add the two equations.  This will cancel the y's\n3x = 13\nDivide both sides by 3\nx = 13/3\nReplace x with 13/3 in one of the equations to find y\nx + y = 4, so\n13/3 + y = 4\ny = 4 - 13/3\ny = 12/3 - 13/3 = -1/3\nAnswer: x = 13/3 and y = -1/3\n\n2) Use substitution.  Replace y with (5/4)x in the first equation\n-10x + 8y = -6 becomes\n-10x + 8(5/4)x = -6\nSimplify\n-10x + 10x = -6\n0 = -6\nSince this is false, there is no solution.\n\n3) Multiply the first equation by -2 and add this to the second equation.\n-2x + 4y = -8\n2x - y = 4\n3y = -4\ny = -4/3\nReplace y with -4/3 in one of the equations and solve for x.\n2x - y = 4\n2x - (-4/3) = 4\n2x + 4/3 = 4\n2x = 4 - 4/3\n2x = 12/3 - 4/3\n2x = 8/3\nDivide both sides by 2\nx = 4/3\nAnswer: x = 4/3 and y = -4/3
1008431
to solve for the value of x,\n\n-7=6+x/5\n-13 = x / 5\nx = - 65
1105884
Say x is the first number, y is the second number.\n\nThus, x+2y = 11 and 2x + 3y = 50.\nSolve for x in the first equation: x = 11 - 2y\nSubstitute this in for x in the second equation: 2(11-2y)+3y = 50\nDistribute the 2: 22 - 4y + 3y = 50\nSimplify: 22 - y = 50\nSolve for y: y = 22 - 50 = -28\nSo y is -28. Because x = 11 - 2y, we can plug in 67 for y and get x: x = 11 - 2(-28) = 67.\n\nThe answer: the first number is 67, the second number is -28.