a+4a+5a=180

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Solution for a+4a+5a=180 equation: 


Simplifying
a + 4a + 5a = 180

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

Combine like terms: 5a + 5a = 10a
10a = 180

Solving
10a = 180

Solving for variable 'a'.

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

Divide each side by '10'.
a = 18

Simplifying
a = 18

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