8r-20=12r+20

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Solution for 8r-20=12r+20 equation:


Simplifying
8r + -20 = 12r + 20

Reorder the terms:
-20 + 8r = 12r + 20

Reorder the terms:
-20 + 8r = 20 + 12r

Solving
-20 + 8r = 20 + 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
-20 + 8r + -12r = 20 + 12r + -12r

Combine like terms: 8r + -12r = -4r
-20 + -4r = 20 + 12r + -12r

Combine like terms: 12r + -12r = 0
-20 + -4r = 20 + 0
-20 + -4r = 20

Add '20' to each side of the equation.
-20 + 20 + -4r = 20 + 20

Combine like terms: -20 + 20 = 0
0 + -4r = 20 + 20
-4r = 20 + 20

Combine like terms: 20 + 20 = 40
-4r = 40

Divide each side by '-4'.
r = -10

Simplifying
r = -10

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