8-x-7x=-64

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Solution for 8-x-7x=-64 equation: 


Simplifying
8 + -1x + -7x = -64

Combine like terms: -1x + -7x = -8x
8 + -8x = -64

Solving
8 + -8x = -64

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + -8x = -64 + -8

Combine like terms: 8 + -8 = 0
0 + -8x = -64 + -8
-8x = -64 + -8

Combine like terms: -64 + -8 = -72
-8x = -72

Divide each side by '-8'.
x = 9

Simplifying
x = 9

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