7a+7a-3a=21

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Solution for 7a+7a-3a=21 equation: 


Simplifying
7a + 7a + -3a = 21

Combine like terms: 7a + 7a = 14a
14a + -3a = 21

Combine like terms: 14a + -3a = 11a
11a = 21

Solving
11a = 21

Solving for variable 'a'.

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

Divide each side by '11'.
a = 1.909090909

Simplifying
a = 1.909090909

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