3a-a+7a=27

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Solution for 3a-a+7a=27 equation: 


Simplifying
3a + -1a + 7a = 27

Combine like terms: 3a + -1a = 2a
2a + 7a = 27

Combine like terms: 2a + 7a = 9a
9a = 27

Solving
9a = 27

Solving for variable 'a'.

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

Divide each side by '9'.
a = 3

Simplifying
a = 3

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