115=-5x-5(x-9)

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Solution for 115=-5x-5(x-9) equation:


Simplifying
115 = -5x + -5(x + -9)

Reorder the terms:
115 = -5x + -5(-9 + x)
115 = -5x + (-9 * -5 + x * -5)
115 = -5x + (45 + -5x)

Reorder the terms:
115 = 45 + -5x + -5x

Combine like terms: -5x + -5x = -10x
115 = 45 + -10x

Solving
115 = 45 + -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.
115 + 10x = 45 + -10x + 10x

Combine like terms: -10x + 10x = 0
115 + 10x = 45 + 0
115 + 10x = 45

Add '-115' to each side of the equation.
115 + -115 + 10x = 45 + -115

Combine like terms: 115 + -115 = 0
0 + 10x = 45 + -115
10x = 45 + -115

Combine like terms: 45 + -115 = -70
10x = -70

Divide each side by '10'.
x = -7

Simplifying
x = -7

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