180=20r

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Solution for 180=20r equation:


Simplifying
180 = 20r

Solving
180 = 20r

Solving for variable 'r'.

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

Add '-20r' to each side of the equation.
180 + -20r = 20r + -20r

Combine like terms: 20r + -20r = 0
180 + -20r = 0

Add '-180' to each side of the equation.
180 + -180 + -20r = 0 + -180

Combine like terms: 180 + -180 = 0
0 + -20r = 0 + -180
-20r = 0 + -180

Combine like terms: 0 + -180 = -180
-20r = -180

Divide each side by '-20'.
r = 9

Simplifying
r = 9

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