I Need help with my math!!!! Collecting like terms: 4x+(-5y)+(-6x)+3y?
957836
4x+(-5y)+(-6x)+3y\n4x+(-6x)+(-5y)+3y\n=-2x-2y
927852
Like terms have the same variable (or have no variable).  In  this expression you have two sets of like terms: Those with x, and those with y\nThose with x: 5x, -x, 2x\nAdd the coefficients:  (5-1+2)x = 6x\n\nThose with y: 7y, -2y\nAdd the coefficients: (7-2)y = 5y\n\n6x+5y  is the answer.\n\nHope this helps.
117592
Multiply the 1st equation by 3\n\n3 [ 2x + y = -4]\nthat gives.. 6x + 3y = -12\n\nsubtract the 2nd equation from this\n\n6x + 3y - (-5x + 3y ) = -12 - (-1)\n\n6x + 3y + 5x - 3y = -12 + 1\n\n11x = -11\n\nx = -1\n\nput this into 1st equation\n\n2(-1) + y = -4\n\n-2 + y = -4\n\ny = -4 + 2\n\ny = -2\n\n\nx = -1 & y = -2\n\nyou can check this with 2nd equation\n\n-5(-1) + 3(-2) = -1\n+5 - 6 = -1 . hence the solution x = -1 & y = -2 is CORRECT
895866
2(3-10x)+4 (5x+2)=-6\n\n6-20x+20x+8=-6\n\n14=-6          Impossible
850894
2x-3y=5 ….multiply by 1\n                           x+2y=-l .... multiply by -2\n\n                                       2x-3y=5 \n                                      -2x-4y=2 …..add two equations\n                                      ------------\n                                        -7y= 7\n                                          y=-1\n\n substitute y=-1 in the second equation coz it is easier in order to get the x value\n\nx+2y=-1\nx-2=-1\nx=1\n\nSo the solution is (1,-1)
869432
Here are some. You can find more.\n\ny = -2/3x + 4 (meaning -2/3 * x + 4)\n\nx ... -6 ... -3 ... 0 ... 3 ... 6\ny .... 8 .... 6 .... 4 ... 2 ... 0\n\ny = 3/2x - 3 (meaning 3/2 x - 3)\n\nx ... -4 ... -2 ... 0 ... 2 ... 4\ny ... -9 ... -6 .. -3 ... 0 ... 3\n\nx + 2y = -4 (ie y = -1/2 x - 2)\n\nx ... -6 ... -4 ... -2 ... 0 ... 2\ny .... 1 .... 0 ... -1 ... -2 .. -3
774101
6+4x=3x+2\n4x-3x=2-6\n1x=-4\nx= -4
373486
10y - 3 = -10 + 6y\n    + 3 =  +3 <-- subtract 3 from both sides  \n-------------------\n10y = -7 + 6y\n-6y =    - 6y <-- subtract 6y from both sides\n---------------\n4y = -7\n--   --\n4  =  4 <-- divide both sides by 4\n\ny = -7/4
805693
#1\n4x+1+3=0\n4x+4=0\n4x=-4\nx=-1\n\n#2\n2y+7+4=y\n2y+11=y\ny=-11
859744
(x + 4y)(x - 4y)\nI answered 2 of your questions. Do the rest of the questions yourself.
720107
4x -12y =5...........(1)\n-x +3y = -1..........(2)\n\nMultiplying eq.(2) by 4 and add with eq.(1)\n(4x -12y =5) + (-4x +12y = -4)=\n0 = 1\nwhich is invalid.
731670
(-4x3 + 3x2 - 5) + (x2 - 5x + 6) =\n-4x3 + 3x2 - 5 + x2 - 5x + 6 =\n-4x3 + 4x2 - 5x + 1
95804
You know that\n              1)3x+4y=12y\n              2)-2x+10=12y\nSo you can substitute 3x+4y for 12y in equation 2. Hence:\n              3)3x+4y=-2x+10\n                   5x=10-4y\n                    x=2-4y/5\nSubstitute this value for x into equation 1 and it becomes:\n              1)8y/5+6=12y\n                     y=15/26\nPlug this back into 3 and you get\n              3)x=2-(4/5)*(15/26)\n                x=20/13\nTherefore the answer to the system is (x,y)=(20/13,15/26)
86546
(3y+1)(-2)+y\n-6y-3+y\n-5y-3\n\n12s+(7-s)2\n12s+14-2s\n10s+14\n\n7x-3x(x+1)\n7x-3x^2-3x\n-3x^2+4x\n\n3t(t-5)+6t^2\n3t^2-15t+6t^2\n9t^2-15t\n\n4w^2-w(2w-3)\n4w^2-2w^2+3w\n2w^2+3w
679588
Multiply it out...\n2y+6y+24x-24y-6x\nThen combine\n-16y+18x OR\n18x-16y
753426
X2   5x - 4y = 1\n10x -8y =2\n-10x + 8y = -3\n-------------------------\n  0=-1                NO SOLUTION
450302
3y+2x=12\n2x=-3y+12\nx= -3/2y+6\nx=-3/2(x-1)+6\n =-3/2x-(-3/2)+6\n = -3/2x+15/2\n5/2x=15/2\nx= 3\n\ny= -3/2y+6-1\n5/2y= 5\ny= 2