r-8=12+2r

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Solution for r-8=12+2r equation:


Simplifying
r + -8 = 12 + 2r

Reorder the terms:
-8 + r = 12 + 2r

Solving
-8 + r = 12 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-8 + r + -2r = 12 + 2r + -2r

Combine like terms: r + -2r = -1r
-8 + -1r = 12 + 2r + -2r

Combine like terms: 2r + -2r = 0
-8 + -1r = 12 + 0
-8 + -1r = 12

Add '8' to each side of the equation.
-8 + 8 + -1r = 12 + 8

Combine like terms: -8 + 8 = 0
0 + -1r = 12 + 8
-1r = 12 + 8

Combine like terms: 12 + 8 = 20
-1r = 20

Divide each side by '-1'.
r = -20

Simplifying
r = -20

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