2x + 10 = 18
2x = 8
x = 4
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18
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line
5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3
2x - 8 = 10 2x = 10 + 8 2x = 18 x = 18 / 2 x = 9
10 + 6x + 2x = 18 First, add the like terms. 6x + 2x + 8x. So now the problem is 10 + 8x = 18. Then subtract 10 from both sides. 8x = 8 Divide by 8 to get the variable by itself. x = 1