7x-(-9x)-15x=8

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Solution for 7x-(-9x)-15x=8 equation: 


Simplifying
7x + -1(-9x) + -15x = 8

Remove parenthesis around (-9x)
7x + -1 * -9x + -15x = 8

Multiply -1 * -9
7x + 9x + -15x = 8

Combine like terms: 7x + 9x = 16x
16x + -15x = 8

Combine like terms: 16x + -15x = 1x
1x = 8

Solving
1x = 8

Solving for variable 'x'.

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

Divide each side by '1'.
x = 8

Simplifying
x = 8

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