c-30+2c+c-30=180

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Solution for c-30+2c+c-30=180 equation: 


Simplifying
c + -30 + 2c + c + -30 = 180

Reorder the terms:
-30 + -30 + c + 2c + c = 180

Combine like terms: -30 + -30 = -60
-60 + c + 2c + c = 180

Combine like terms: c + 2c = 3c
-60 + 3c + c = 180

Combine like terms: 3c + c = 4c
-60 + 4c = 180

Solving
-60 + 4c = 180

Solving for variable 'c'.

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

Add '60' to each side of the equation.
-60 + 60 + 4c = 180 + 60

Combine like terms: -60 + 60 = 0
0 + 4c = 180 + 60
4c = 180 + 60

Combine like terms: 180 + 60 = 240
4c = 240

Divide each side by '4'.
c = 60

Simplifying
c = 60

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