-12.9+4.2x=15.7

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Solution for -12.9+4.2x=15.7 equation: 


Simplifying
-12.9 + 4.2x = 15.7

Solving
-12.9 + 4.2x = 15.7

Solving for variable 'x'.

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

Add '12.9' to each side of the equation.
-12.9 + 12.9 + 4.2x = 15.7 + 12.9

Combine like terms: -12.9 + 12.9 = 0.0
0.0 + 4.2x = 15.7 + 12.9
4.2x = 15.7 + 12.9

Combine like terms: 15.7 + 12.9 = 28.6
4.2x = 28.6

Divide each side by '4.2'.
x = 6.80952381

Simplifying
x = 6.80952381

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