9a+12=57

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Solution for 9a+12=57 equation: 


Simplifying
9a + 12 = 57

Reorder the terms:
12 + 9a = 57

Solving
12 + 9a = 57

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 + 9a = 57 + -12

Combine like terms: 12 + -12 = 0
0 + 9a = 57 + -12
9a = 57 + -12

Combine like terms: 57 + -12 = 45
9a = 45

Divide each side by '9'.
a = 5

Simplifying
a = 5

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