-3x=8-(-4)

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Solution for -3x=8-(-4) equation: 


Simplifying
-3x = 8 + -1(-4)

Multiply -1 * -4
-3x = 8 + 4

Combine like terms: 8 + 4 = 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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