11x+9=10(x-7)-8

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Solution for 11x+9=10(x-7)-8 equation:


Simplifying
11x + 9 = 10(x + -7) + -8

Reorder the terms:
9 + 11x = 10(x + -7) + -8

Reorder the terms:
9 + 11x = 10(-7 + x) + -8
9 + 11x = (-7 * 10 + x * 10) + -8
9 + 11x = (-70 + 10x) + -8

Reorder the terms:
9 + 11x = -70 + -8 + 10x

Combine like terms: -70 + -8 = -78
9 + 11x = -78 + 10x

Solving
9 + 11x = -78 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
9 + 11x + -10x = -78 + 10x + -10x

Combine like terms: 11x + -10x = 1x
9 + 1x = -78 + 10x + -10x

Combine like terms: 10x + -10x = 0
9 + 1x = -78 + 0
9 + 1x = -78

Add '-9' to each side of the equation.
9 + -9 + 1x = -78 + -9

Combine like terms: 9 + -9 = 0
0 + 1x = -78 + -9
1x = -78 + -9

Combine like terms: -78 + -9 = -87
1x = -87

Divide each side by '1'.
x = -87

Simplifying
x = -87

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