-2-9r=10+2r+10

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Solution for -2-9r=10+2r+10 equation:


Simplifying
-2 + -9r = 10 + 2r + 10

Reorder the terms:
-2 + -9r = 10 + 10 + 2r

Combine like terms: 10 + 10 = 20
-2 + -9r = 20 + 2r

Solving
-2 + -9r = 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.
-2 + -9r + -2r = 20 + 2r + -2r

Combine like terms: -9r + -2r = -11r
-2 + -11r = 20 + 2r + -2r

Combine like terms: 2r + -2r = 0
-2 + -11r = 20 + 0
-2 + -11r = 20

Add '2' to each side of the equation.
-2 + 2 + -11r = 20 + 2

Combine like terms: -2 + 2 = 0
0 + -11r = 20 + 2
-11r = 20 + 2

Combine like terms: 20 + 2 = 22
-11r = 22

Divide each side by '-11'.
r = -2

Simplifying
r = -2

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