-84=-3a

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Solution for -84=-3a equation:


Simplifying
-84 = -3a

Solving
-84 = -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
-84 + 3a = -3a + 3a

Combine like terms: -3a + 3a = 0
-84 + 3a = 0

Add '84' to each side of the equation.
-84 + 84 + 3a = 0 + 84

Combine like terms: -84 + 84 = 0
0 + 3a = 0 + 84
3a = 0 + 84

Combine like terms: 0 + 84 = 84
3a = 84

Divide each side by '3'.
a = 28

Simplifying
a = 28

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