3a-9a=30

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Solution for 3a-9a=30 equation: 


Simplifying
3a + -9a = 30

Combine like terms: 3a + -9a = -6a
-6a = 30

Solving
-6a = 30

Solving for variable 'a'.

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

Divide each side by '-6'.
a = -5

Simplifying
a = -5

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