9a=7a+12

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Solution for 9a=7a+12 equation: 


Simplifying
9a = 7a + 12

Reorder the terms:
9a = 12 + 7a

Solving
9a = 12 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
9a + -7a = 12 + 7a + -7a

Combine like terms: 9a + -7a = 2a
2a = 12 + 7a + -7a

Combine like terms: 7a + -7a = 0
2a = 12 + 0
2a = 12

Divide each side by '2'.
a = 6

Simplifying
a = 6

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