9a+3a=85

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Solution for 9a+3a=85 equation: 


Simplifying
9a + 3a = 85

Combine like terms: 9a + 3a = 12a
12a = 85

Solving
12a = 85

Solving for variable 'a'.

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

Divide each side by '12'.
a = 7.083333333

Simplifying
a = 7.083333333

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