115=2x-5(-x-9)

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Solution for 115=2x-5(-x-9) equation:


Simplifying
115 = 2x + -5(-1x + -9)

Reorder the terms:
115 = 2x + -5(-9 + -1x)
115 = 2x + (-9 * -5 + -1x * -5)
115 = 2x + (45 + 5x)

Reorder the terms:
115 = 45 + 2x + 5x

Combine like terms: 2x + 5x = 7x
115 = 45 + 7x

Solving
115 = 45 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
115 + -7x = 45 + 7x + -7x

Combine like terms: 7x + -7x = 0
115 + -7x = 45 + 0
115 + -7x = 45

Add '-115' to each side of the equation.
115 + -115 + -7x = 45 + -115

Combine like terms: 115 + -115 = 0
0 + -7x = 45 + -115
-7x = 45 + -115

Combine like terms: 45 + -115 = -70
-7x = -70

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

Simplifying
x = 10

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