2x - 5x = -6 -3x = -6 3x = 6 x = 6/3 x = 2 By Mohammed Arafat
2x + 6 = -9 + 5x Subtract 2x from both sides: 6 = -9 + 3x Add 9 to both sides: 15 = 3x Divide both sides by 3: 5 = x
if: 2x + 6 = -6 then: 2x = -12 x = -6 if: 5x + 7y = 1 then: 5(-6) + 7y = 1 7y = 31 y = 31/7
5X = 2X + 9 subtract 2X from each side 5X - 2X = 2X - 2X + 9 3X = 9 divide each sides integer by 3 (3/3)X = 9/3 X = 3 ------------check in original equation 5(3) = 2(3) + 9 15 = 6 + 9 15 = 15 checks out
2X + 5Y = 6 5Y = - 2X + 6 Y = - 2/5X + 6/5 ----------------------------------and 5X - 2Y = 8 2Y = - 5X + 8 Y = - 5/2 + 4 ------------------- Look like intersecting lines, though not perpendicular
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.
5x-8= -2x+6(+8 = +8)5x=-2x+14(+2x = +2x)7x=14x=14
6 + 2x = 5x + 9 , 6 - 9 = 5x - 2x , -3 = 3x , x = -1
if you meant 5x+9=3*15 then, 5x = 36, x = 7.2 if you meant 5x+9=3x+15 then, 2x = 6, x = 3
2x - 5x = -6 -3x = -6 3x = 6 x = 6/3 x = 2 By Mohammed Arafat
x=1 2/3 How?: 2x-4+3 = 5x-6 2x-1 = 5x-6 2x-1+1 = 5x-6+1 2x = 5x-5 2x-5x = 5x-5x-5 -3x = -5 -3x/-3 = -5/-3 x = 5/3 x = 1 2/3
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
8x-7 plus 2x equals 6 plus 5x plus 2?
2x + 6 = -9 + 5x Subtract 2x from both sides: 6 = -9 + 3x Add 9 to both sides: 15 = 3x Divide both sides by 3: 5 = x
3x + 5x = 2x + 28x = 2x + 26x = 2x = (2/6) = 1/3
if: 2x + 6 = -6 then: 2x = -12 x = -6 if: 5x + 7y = 1 then: 5(-6) + 7y = 1 7y = 31 y = 31/7
5X = 2X + 9 subtract 2X from each side 5X - 2X = 2X - 2X + 9 3X = 9 divide each sides integer by 3 (3/3)X = 9/3 X = 3 ------------check in original equation 5(3) = 2(3) + 9 15 = 6 + 9 15 = 15 checks out