2r+12=20r-20

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Solution for 2r+12=20r-20 equation:


Simplifying
2r + 12 = 20r + -20

Reorder the terms:
12 + 2r = 20r + -20

Reorder the terms:
12 + 2r = -20 + 20r

Solving
12 + 2r = -20 + 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.
12 + 2r + -20r = -20 + 20r + -20r

Combine like terms: 2r + -20r = -18r
12 + -18r = -20 + 20r + -20r

Combine like terms: 20r + -20r = 0
12 + -18r = -20 + 0
12 + -18r = -20

Add '-12' to each side of the equation.
12 + -12 + -18r = -20 + -12

Combine like terms: 12 + -12 = 0
0 + -18r = -20 + -12
-18r = -20 + -12

Combine like terms: -20 + -12 = -32
-18r = -32

Divide each side by '-18'.
r = 1.777777778

Simplifying
r = 1.777777778

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