120r-180=84r

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Solution for 120r-180=84r equation:


Simplifying
120r + -180 = 84r

Reorder the terms:
-180 + 120r = 84r

Solving
-180 + 120r = 84r

Solving for variable 'r'.

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

Add '-84r' to each side of the equation.
-180 + 120r + -84r = 84r + -84r

Combine like terms: 120r + -84r = 36r
-180 + 36r = 84r + -84r

Combine like terms: 84r + -84r = 0
-180 + 36r = 0

Add '180' to each side of the equation.
-180 + 180 + 36r = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 36r = 0 + 180
36r = 0 + 180

Combine like terms: 0 + 180 = 180
36r = 180

Divide each side by '36'.
r = 5

Simplifying
r = 5

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