9a+15=12a

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Solution for 9a+15=12a equation:


Simplifying
9a + 15 = 12a

Reorder the terms:
15 + 9a = 12a

Solving
15 + 9a = 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
15 + 9a + -12a = 12a + -12a

Combine like terms: 9a + -12a = -3a
15 + -3a = 12a + -12a

Combine like terms: 12a + -12a = 0
15 + -3a = 0

Add '-15' to each side of the equation.
15 + -15 + -3a = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -3a = 0 + -15
-3a = 0 + -15

Combine like terms: 0 + -15 = -15
-3a = -15

Divide each side by '-3'.
a = 5

Simplifying
a = 5

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