12x-9=11(x+8)-7

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Solution for 12x-9=11(x+8)-7 equation:


Simplifying
12x + -9 = 11(x + 8) + -7

Reorder the terms:
-9 + 12x = 11(x + 8) + -7

Reorder the terms:
-9 + 12x = 11(8 + x) + -7
-9 + 12x = (8 * 11 + x * 11) + -7
-9 + 12x = (88 + 11x) + -7

Reorder the terms:
-9 + 12x = 88 + -7 + 11x

Combine like terms: 88 + -7 = 81
-9 + 12x = 81 + 11x

Solving
-9 + 12x = 81 + 11x

Solving for variable 'x'.

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

Add '-11x' to each side of the equation.
-9 + 12x + -11x = 81 + 11x + -11x

Combine like terms: 12x + -11x = 1x
-9 + 1x = 81 + 11x + -11x

Combine like terms: 11x + -11x = 0
-9 + 1x = 81 + 0
-9 + 1x = 81

Add '9' to each side of the equation.
-9 + 9 + 1x = 81 + 9

Combine like terms: -9 + 9 = 0
0 + 1x = 81 + 9
1x = 81 + 9

Combine like terms: 81 + 9 = 90
1x = 90

Divide each side by '1'.
x = 90

Simplifying
x = 90

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