3a+9a=4

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Solution for 3a+9a=4 equation: 


Simplifying
3a + 9a = 4

Combine like terms: 3a + 9a = 12a
12a = 4

Solving
12a = 4

Solving for variable 'a'.

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

Divide each side by '12'.
a = 0.3333333333

Simplifying
a = 0.3333333333

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