-20=10+10r

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Solution for -20=10+10r equation:


Simplifying
-20 = 10 + 10r

Solving
-20 = 10 + 10r

Solving for variable 'r'.

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

Add '-10r' to each side of the equation.
-20 + -10r = 10 + 10r + -10r

Combine like terms: 10r + -10r = 0
-20 + -10r = 10 + 0
-20 + -10r = 10

Add '20' to each side of the equation.
-20 + 20 + -10r = 10 + 20

Combine like terms: -20 + 20 = 0
0 + -10r = 10 + 20
-10r = 10 + 20

Combine like terms: 10 + 20 = 30
-10r = 30

Divide each side by '-10'.
r = -3

Simplifying
r = -3

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