12-3x=-8.7

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Solution for 12-3x=-8.7 equation: 


Simplifying
12 + -3x = -8.7

Solving
12 + -3x = -8.7

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + -3x = -8.7 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = -8.7 + -12
-3x = -8.7 + -12

Combine like terms: -8.7 + -12 = -20.7
-3x = -20.7

Divide each side by '-3'.
x = 6.9

Simplifying
x = 6.9

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