a+3a+5a=180

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Solution for a+3a+5a=180 equation: 


Simplifying
a + 3a + 5a = 180

Combine like terms: a + 3a = 4a
4a + 5a = 180

Combine like terms: 4a + 5a = 9a
9a = 180

Solving
9a = 180

Solving for variable 'a'.

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

Divide each side by '9'.
a = 20

Simplifying
a = 20

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