-3x=5+7

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Solution for -3x=5+7 equation: 


Simplifying
-3x = 5 + 7

Combine like terms: 5 + 7 = 12
-3x = 12

Solving
-3x = 12

Solving for variable 'x'.

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

Divide each side by '-3'.
x = -4

Simplifying
x = -4

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