-9+12x-3x=64

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Solution for -9+12x-3x=64 equation: 


Simplifying
-9 + 12x + -3x = 64

Combine like terms: 12x + -3x = 9x
-9 + 9x = 64

Solving
-9 + 9x = 64

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 9x = 64 + 9

Combine like terms: -9 + 9 = 0
0 + 9x = 64 + 9
9x = 64 + 9

Combine like terms: 64 + 9 = 73
9x = 73

Divide each side by '9'.
x = 8.111111111

Simplifying
x = 8.111111111

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