a+a+40+a+50=180

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Solution for a+a+40+a+50=180 equation: 


Simplifying
a + a + 40 + a + 50 = 180

Reorder the terms:
40 + 50 + a + a + a = 180

Combine like terms: 40 + 50 = 90
90 + a + a + a = 180

Combine like terms: a + a = 2a
90 + 2a + a = 180

Combine like terms: 2a + a = 3a
90 + 3a = 180

Solving
90 + 3a = 180

Solving for variable 'a'.

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

Add '-90' to each side of the equation.
90 + -90 + 3a = 180 + -90

Combine like terms: 90 + -90 = 0
0 + 3a = 180 + -90
3a = 180 + -90

Combine like terms: 180 + -90 = 90
3a = 90

Divide each side by '3'.
a = 30

Simplifying
a = 30

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