R+13=20

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Solution for R+13=20 equation: 


Simplifying
R + 13 = 20

Reorder the terms:
13 + R = 20

Solving
13 + R = 20

Solving for variable 'R'.

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

Add '-13' to each side of the equation.
13 + -13 + R = 20 + -13

Combine like terms: 13 + -13 = 0
0 + R = 20 + -13
R = 20 + -13

Combine like terms: 20 + -13 = 7
R = 7

Simplifying
R = 7

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