9a+3a=9

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Solution for 9a+3a=9 equation: 


Simplifying
9a + 3a = 9

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

Solving
12a = 9

Solving for variable 'a'.

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

Divide each side by '12'.
a = 0.75

Simplifying
a = 0.75

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