7a+2a=80a

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Solution for 7a+2a=80a equation: 


Simplifying
7a + 2a = 80a

Combine like terms: 7a + 2a = 9a
9a = 80a

Solving
9a = 80a

Solving for variable 'a'.

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

Add '-80a' to each side of the equation.
9a + -80a = 80a + -80a

Combine like terms: 9a + -80a = -71a
-71a = 80a + -80a

Combine like terms: 80a + -80a = 0
-71a = 0

Divide each side by '-71'.
a = 0

Simplifying
a = 0

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