-4a-3a=-84

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


Simplifying
-4a + -3a = -84

Combine like terms: -4a + -3a = -7a
-7a = -84

Solving
-7a = -84

Solving for variable 'a'.

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

Divide each side by '-7'.
a = 12

Simplifying
a = 12

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