R+1=21

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Solution for R+1=21 equation: 


Simplifying
R + 1 = 21

Reorder the terms:
1 + R = 21

Solving
1 + R = 21

Solving for variable 'R'.

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

Add '-1' to each side of the equation.
1 + -1 + R = 21 + -1

Combine like terms: 1 + -1 = 0
0 + R = 21 + -1
R = 21 + -1

Combine like terms: 21 + -1 = 20
R = 20

Simplifying
R = 20

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