3r+5=20-2r

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Solution for 3r+5=20-2r equation:


Simplifying
3r + 5 = 20 + -2r

Reorder the terms:
5 + 3r = 20 + -2r

Solving
5 + 3r = 20 + -2r

Solving for variable 'r'.

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

Add '2r' to each side of the equation.
5 + 3r + 2r = 20 + -2r + 2r

Combine like terms: 3r + 2r = 5r
5 + 5r = 20 + -2r + 2r

Combine like terms: -2r + 2r = 0
5 + 5r = 20 + 0
5 + 5r = 20

Add '-5' to each side of the equation.
5 + -5 + 5r = 20 + -5

Combine like terms: 5 + -5 = 0
0 + 5r = 20 + -5
5r = 20 + -5

Combine like terms: 20 + -5 = 15
5r = 15

Divide each side by '5'.
r = 3

Simplifying
r = 3

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