-7x+-x=25

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Solution for -7x+-x=25 equation: 


Simplifying
-7x + -1x = 25

Combine like terms: -7x + -1x = -8x
-8x = 25

Solving
-8x = 25

Solving for variable 'x'.

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

Divide each side by '-8'.
x = -3.125

Simplifying
x = -3.125

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