a+89=180

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Solution for a+89=180 equation: 


Simplifying
a + 89 = 180

Reorder the terms:
89 + a = 180

Solving
89 + a = 180

Solving for variable 'a'.

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

Add '-89' to each side of the equation.
89 + -89 + a = 180 + -89

Combine like terms: 89 + -89 = 0
0 + a = 180 + -89
a = 180 + -89

Combine like terms: 180 + -89 = 91
a = 91

Simplifying
a = 91

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