3(-4a-4)=-84

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Solution for 3(-4a-4)=-84 equation: 


Simplifying
3(-4a + -4) = -84

Reorder the terms:
3(-4 + -4a) = -84
(-4 * 3 + -4a * 3) = -84
(-12 + -12a) = -84

Solving
-12 + -12a = -84

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + -12a = -84 + 12

Combine like terms: -12 + 12 = 0
0 + -12a = -84 + 12
-12a = -84 + 12

Combine like terms: -84 + 12 = -72
-12a = -72

Divide each side by '-12'.
a = 6

Simplifying
a = 6

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