3a-8a=15

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Solution for 3a-8a=15 equation: 


Simplifying
3a + -8a = 15

Combine like terms: 3a + -8a = -5a
-5a = 15

Solving
-5a = 15

Solving for variable 'a'.

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

Divide each side by '-5'.
a = -3

Simplifying
a = -3

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