20+r=111

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Solution for 20+r=111 equation: 


Simplifying
20 + r = 111

Solving
20 + r = 111

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + r = 111 + -20

Combine like terms: 20 + -20 = 0
0 + r = 111 + -20
r = 111 + -20

Combine like terms: 111 + -20 = 91
r = 91

Simplifying
r = 91

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