20=10+2r

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Solution for 20=10+2r equation:


Simplifying
20 = 10 + 2r

Solving
20 = 10 + 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 = 10 + 2r + -2r

Combine like terms: 2r + -2r = 0
20 + -2r = 10 + 0
20 + -2r = 10

Add '-20' to each side of the equation.
20 + -20 + -2r = 10 + -20

Combine like terms: 20 + -20 = 0
0 + -2r = 10 + -20
-2r = 10 + -20

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

Divide each side by '-2'.
r = 5

Simplifying
r = 5

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