a-40+a+9+65=180

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Solution for a-40+a+9+65=180 equation: 


Simplifying
a + -40 + a + 9 + 65 = 180

Reorder the terms:
-40 + 9 + 65 + a + a = 180

Combine like terms: -40 + 9 = -31
-31 + 65 + a + a = 180

Combine like terms: -31 + 65 = 34
34 + a + a = 180

Combine like terms: a + a = 2a
34 + 2a = 180

Solving
34 + 2a = 180

Solving for variable 'a'.

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

Add '-34' to each side of the equation.
34 + -34 + 2a = 180 + -34

Combine like terms: 34 + -34 = 0
0 + 2a = 180 + -34
2a = 180 + -34

Combine like terms: 180 + -34 = 146
2a = 146

Divide each side by '2'.
a = 73

Simplifying
a = 73

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