2a+a-9+a+13=180

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Solution for 2a+a-9+a+13=180 equation:


Simplifying
2a + a + -9 + a + 13 = 180

Reorder the terms:
-9 + 13 + 2a + a + a = 180

Combine like terms: -9 + 13 = 4
4 + 2a + a + a = 180

Combine like terms: 2a + a = 3a
4 + 3a + a = 180

Combine like terms: 3a + a = 4a
4 + 4a = 180

Solving
4 + 4a = 180

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + 4a = 180 + -4

Combine like terms: 4 + -4 = 0
0 + 4a = 180 + -4
4a = 180 + -4

Combine like terms: 180 + -4 = 176
4a = 176

Divide each side by '4'.
a = 44

Simplifying
a = 44

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