4a-8a=9

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Solution for 4a-8a=9 equation: 


Simplifying
4a + -8a = 9

Combine like terms: 4a + -8a = -4a
-4a = 9

Solving
-4a = 9

Solving for variable 'a'.

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

Divide each side by '-4'.
a = -2.25

Simplifying
a = -2.25

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