15a+9=12a+6

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Solution for 15a+9=12a+6 equation:


Simplifying
15a + 9 = 12a + 6

Reorder the terms:
9 + 15a = 12a + 6

Reorder the terms:
9 + 15a = 6 + 12a

Solving
9 + 15a = 6 + 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.
9 + 15a + -12a = 6 + 12a + -12a

Combine like terms: 15a + -12a = 3a
9 + 3a = 6 + 12a + -12a

Combine like terms: 12a + -12a = 0
9 + 3a = 6 + 0
9 + 3a = 6

Add '-9' to each side of the equation.
9 + -9 + 3a = 6 + -9

Combine like terms: 9 + -9 = 0
0 + 3a = 6 + -9
3a = 6 + -9

Combine like terms: 6 + -9 = -3
3a = -3

Divide each side by '3'.
a = -1

Simplifying
a = -1

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