-81=-3a

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Solution for -81=-3a equation:


Simplifying
-81 = -3a

Solving
-81 = -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.
-81 + 3a = -3a + 3a

Combine like terms: -3a + 3a = 0
-81 + 3a = 0

Add '81' to each side of the equation.
-81 + 81 + 3a = 0 + 81

Combine like terms: -81 + 81 = 0
0 + 3a = 0 + 81
3a = 0 + 81

Combine like terms: 0 + 81 = 81
3a = 81

Divide each side by '3'.
a = 27

Simplifying
a = 27

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