57+36+a=180

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Solution for 57+36+a=180 equation: 


Simplifying
57 + 36 + a = 180

Combine like terms: 57 + 36 = 93
93 + a = 180

Solving
93 + a = 180

Solving for variable 'a'.

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

Add '-93' to each side of the equation.
93 + -93 + a = 180 + -93

Combine like terms: 93 + -93 = 0
0 + a = 180 + -93
a = 180 + -93

Combine like terms: 180 + -93 = 87
a = 87

Simplifying
a = 87

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