-36+12a=-21

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Solution for -36+12a=-21 equation: 


Simplifying
-36 + 12a = -21

Solving
-36 + 12a = -21

Solving for variable 'a'.

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

Add '36' to each side of the equation.
-36 + 36 + 12a = -21 + 36

Combine like terms: -36 + 36 = 0
0 + 12a = -21 + 36
12a = -21 + 36

Combine like terms: -21 + 36 = 15
12a = 15

Divide each side by '12'.
a = 1.25

Simplifying
a = 1.25

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