4a-a=28

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Solution for 4a-a=28 equation: 


Simplifying
4a + -1a = 28

Combine like terms: 4a + -1a = 3a
3a = 28

Solving
3a = 28

Solving for variable 'a'.

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

Divide each side by '3'.
a = 9.333333333

Simplifying
a = 9.333333333

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