a+.5a=12

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Solution for a+.5a=12 equation: 


Simplifying
a + 0.5a = 12

Combine like terms: a + 0.5a = 1.5a
1.5a = 12

Solving
1.5a = 12

Solving for variable 'a'.

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

Divide each side by '1.5'.
a = 8

Simplifying
a = 8

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