R+5=21

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Solution for R+5=21 equation: 


Simplifying
R + 5 = 21

Reorder the terms:
5 + R = 21

Solving
5 + R = 21

Solving for variable 'R'.

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

Add '-5' to each side of the equation.
5 + -5 + R = 21 + -5

Combine like terms: 5 + -5 = 0
0 + R = 21 + -5
R = 21 + -5

Combine like terms: 21 + -5 = 16
R = 16

Simplifying
R = 16

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