4a-a=9

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Solution for 4a-a=9 equation: 


Simplifying
4a + -1a = 9

Combine like terms: 4a + -1a = 3a
3a = 9

Solving
3a = 9

Solving for variable 'a'.

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

Divide each side by '3'.
a = 3

Simplifying
a = 3

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