a+b+a-b=180

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Solution for a+b+a-b=180 equation: 


Simplifying
a + b + a + -1b = 180

Reorder the terms:
a + a + b + -1b = 180

Combine like terms: a + a = 2a
2a + b + -1b = 180

Combine like terms: b + -1b = 0
2a + 0 = 180
2a = 180

Solving
2a = 180

Solving for variable 'a'.

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

Divide each side by '2'.
a = 90

Simplifying
a = 90

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