R+R+3R+20=90

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Solution for R+R+3R+20=90 equation:


Simplifying
R + R + 3R + 20 = 90

Reorder the terms:
20 + R + R + 3R = 90

Combine like terms: R + R = 2R
20 + 2R + 3R = 90

Combine like terms: 2R + 3R = 5R
20 + 5R = 90

Solving
20 + 5R = 90

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 + 5R = 90 + -20

Combine like terms: 20 + -20 = 0
0 + 5R = 90 + -20
5R = 90 + -20

Combine like terms: 90 + -20 = 70
5R = 70

Divide each side by '5'.
R = 14

Simplifying
R = 14

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