Can anybody solve this equation for x : x = 5x - y?
474164
x=5x-y\n\nx-5x=-y\n\n-4x=-y\n\ndivide both sides by -4\n\n(-4/-4)x=(-y/-4)\n\n1x=(1/4)y\n\nx=y/4
369017
Set one equation equal to one of the variables, then insert it into the other equation and solve for the second variable.  then insert that variable into the original equation.\n\nx+y=5 or x=5-y\nx+2y=6\n\nput x=5-y into the second equation\n\n5-y+2y=6 \n\nnow solve for y\n\ny=1\n\nput this back into one of the original equations\n\nx+1=5\n\nx=4
931393
GIVEN:\n\n0.4x - 0.1y = 5 \n6.4x + 0.4y = 60\n\nSTEP 1:  Multiply the first equation by 4 to get the following:  (because notice that 0.1 * 4 = 0.4, and we will be able to cancel our y's out and solve for x)\n\n1.6x - 0.4y = 20\n6.4x + 0.4y = 60\n\nSTEP 2:  Add the two equations together, to get one equation with our x variable only:\n\n1.6x - 0.4y = 20\n6.4x + 0.4y = 60\n-----------------------\n8.0x + 0y = 80\n\nSTEP 3:  Divide both sides by 8 to solve for x:\n\nx = 10\n\nSTEP 4:  Substitute this value for x into either one of your original 2 equations to solve for y:\n\n0.4x - 0.1y = 5\n0.4(10) - 0.1y = 5\n4 - 0.1y = 5\n-0.1y = 1\n0.1y = -1\ny = -10\n\nFINAL STEP:  Your answers are x = 10, y = -10\n\nHope that helped!\n\n~ ♥ ~
486558
Easiest way to resolve this is to rearrange the equation for either x or y:\n\nx = (10-y)/2\n\ny = 10-2x\n\nSo if you already know y, then you use the first equation, and if you know x, then use the second.\n\nFor example, the first one would require using the second equation: y = 10 - 2 x 5 = 0, therefore first one is (5,0).\n\nThe next one would require using the first equation: x = (10 - 10) / 2 = 0, therefore the second one is (0, 10).
106013
y = -2x + 8\n\nsolve it yourself
91756
Ok if you have like 5x+6=y,and x=2,then obviously use substitution. Substitute the x for the 2 and solve. Y would equal 16. If you have any system that has variable=whatever then that would be easier because in the second equation you would just have to substitute the variable for whatever it equals. Hope this helps.
958973
y=5x+2\ny=5(2)+2\ny=10+2\ny=12
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
162736
x-y=5\nx/5-y/5=1\nhence x intercept [5,0] and y intercept [0,-5]
594458
The steps in substituting "2" for "x" are:\n\n3(2)+ y = 5\nwhich results in:\n6 + y = 5\nthen you isolate "y" by subtracting "6" from each side of the equation:\n6 - 6 + y = 5 - 6\nwhich results in the answer:\ny = -1\n\nI hope that helps.
598425
Solving for x in the first equation gives us...\n\nx + 5 - 5 < 4 - 5\nx < -1\n\nSolving for x in the second gives us...\n\n2 - 7x - 2 < 16 - 2\n-7x < 14\n---   ---   Here, don't forget to swap the sign\n -7    -7   since we are dividing by a negative.\nx > -2\n\nSo use that to find your solution set.  We know x must be less than -1 but greater than -2.  \n\nHope this is helpful.
576742
ANSWER: y = 2; x = -1/5\n\nSOLUTION:\n\n1) First solve for y.  You can do this by adding the two equations together:\n\n5x - 2y = -5\ny - 5x = 3\n\nNotice that you have a positive 5x on the first equation, and a minus 5x on the second equation, so they both cancel out and you can re-write the equation as follows:\n\n- 2y = -5\n   y = 3\n\nAdd up these 2 equations and you get: \n\n- 1y = -2   or y =  2\n\n2) Then solve for x by replacing y with 2.  You can use any of the 2 equations from the problem.\n\n5x - 2(2) = -5\n\n5x - 4 = -5\n\n5x = -5 + 4\n\n5x = -1\n\nx = -1/5
71189
x = 4\n\nSimplifying\n2x + -3 = 5\nReorder the terms:\n-3 + 2x = 5\nSolving\n-3 + 2x = 5\nSolving for variable 'x'.\n\nMove all terms containing x to the left, all other terms to the right.\n\nAdd '3' to each side of the equation.\n-3 + 3 + 2x = 5 + 3\nCombine like terms: -3 + 3 = 0\n0 + 2x = 5 + 3\n2x = 5 + 3\nCombine like terms: 5 + 3 = 8\n2x = 8\nDivide each side by '2'.\nx = 4\nSimplifying\nx = 4\n\nNow prove it.  (2*4)-3=5
701861
-5x+y=6 therefore y=5x+6\n2x-3y=60\n-----------\n2x-3(5x+6)=60\n2x-15x-18=60\n-13x=78\nx=-6\n\nWhen x=-6 is plugged into either of the original equations the value for y can be found by:\n\n-5(-6)+y=6\n30+y=6\ny=-24\n\n2(-6)-3y=60\n-12-3y=60\n-3y=72\ny=-24\n\nThe solution is in (x,y) form...(-6,-24)
904136
if x+y = 5 and 2x+y =6, then x = 1 ( by subtracting two equations)\nif x =1, then y = 4\n\nthus x -y = 1-4 = - 3\n\ncool :)
1169467
y = x^2 + 5x - 3\n2y=3x - 2\n----------------\n2y = 2x^2 + 10x - 6\n2y = 3x - 2\n-----------------------\n    0 = 2x^2 + 7x - 4\n=>2x^2 + 7x - 4 =0\n=>2x^2 + 8x - x - 4 = 0\n=>2x(x + 4) -1(x+4) = 0\n=> (2x - 1)(x + 4) = 0\ntherefore 2x - 1 = 0 => x = 1/2 or \nx + 4 = 0 or x = -4\nx = - 4 or 1/2  \ngot it?
394124
y=5\nx=-2/3\n\nSame method as the other one.