12.6x-4.9x=-138.6

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Solution for 12.6x-4.9x=-138.6 equation: 


Simplifying
12.6x + -4.9x = -138.6

Combine like terms: 12.6x + -4.9x = 7.7x
7.7x = -138.6

Solving
7.7x = -138.6

Solving for variable 'x'.

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

Divide each side by '7.7'.
x = -18

Simplifying
x = -18

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