7x-2(-x+18)=72

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Solution for 7x-2(-x+18)=72 equation:


Simplifying
7x + -2(-1x + 18) = 72

Reorder the terms:
7x + -2(18 + -1x) = 72
7x + (18 * -2 + -1x * -2) = 72
7x + (-36 + 2x) = 72

Reorder the terms:
-36 + 7x + 2x = 72

Combine like terms: 7x + 2x = 9x
-36 + 9x = 72

Solving
-36 + 9x = 72

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '36' to each side of the equation.
-36 + 36 + 9x = 72 + 36

Combine like terms: -36 + 36 = 0
0 + 9x = 72 + 36
9x = 72 + 36

Combine like terms: 72 + 36 = 108
9x = 108

Divide each side by '9'.
x = 12

Simplifying
x = 12

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