2r+r+2=20

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Solution for 2r+r+2=20 equation: 


Simplifying
2r + r + 2 = 20

Reorder the terms:
2 + 2r + r = 20

Combine like terms: 2r + r = 3r
2 + 3r = 20

Solving
2 + 3r = 20

Solving for variable 'r'.

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

Add '-2' to each side of the equation.
2 + -2 + 3r = 20 + -2

Combine like terms: 2 + -2 = 0
0 + 3r = 20 + -2
3r = 20 + -2

Combine like terms: 20 + -2 = 18
3r = 18

Divide each side by '3'.
r = 6

Simplifying
r = 6

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