-20=2r

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Solution for -20=2r equation:


Simplifying
-20 = 2r

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

Combine like terms: 2r + -2r = 0
-20 + -2r = 0

Add '20' to each side of the equation.
-20 + 20 + -2r = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -2r = 0 + 20
-2r = 0 + 20

Combine like terms: 0 + 20 = 20
-2r = 20

Divide each side by '-2'.
r = -10

Simplifying
r = -10

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