(x+9)*8=x-12

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Solution for (x+9)*8=x-12 equation:


Simplifying
(x + 9) * 8 = x + -12

Reorder the terms:
(9 + x) * 8 = x + -12

Reorder the terms for easier multiplication:
8(9 + x) = x + -12
(9 * 8 + x * 8) = x + -12
(72 + 8x) = x + -12

Reorder the terms:
72 + 8x = -12 + x

Solving
72 + 8x = -12 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
72 + 8x + -1x = -12 + x + -1x

Combine like terms: 8x + -1x = 7x
72 + 7x = -12 + x + -1x

Combine like terms: x + -1x = 0
72 + 7x = -12 + 0
72 + 7x = -12

Add '-72' to each side of the equation.
72 + -72 + 7x = -12 + -72

Combine like terms: 72 + -72 = 0
0 + 7x = -12 + -72
7x = -12 + -72

Combine like terms: -12 + -72 = -84
7x = -84

Divide each side by '7'.
x = -12

Simplifying
x = -12

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