2x = 18 then x = 18/2 = 9
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7x = 18 - 2x 7x + 2x = 18 9x = 18 x = 2
2x - 8 = 10 2x = 10 + 8 2x = 18 x = 18 / 2 x = 9
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line
2x + 52 = 7 2x + 25 = 7 2x = 7 - 25 2x = -18 x = -18/2 x = -9
-3x+7=2x-18 ---> 7+18=2x-3x ----> 25=5x ----> x=5