5r-8=-2r+20

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Solution for 5r-8=-2r+20 equation:


Simplifying
5r + -8 = -2r + 20

Reorder the terms:
-8 + 5r = -2r + 20

Reorder the terms:
-8 + 5r = 20 + -2r

Solving
-8 + 5r = 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.
-8 + 5r + 2r = 20 + -2r + 2r

Combine like terms: 5r + 2r = 7r
-8 + 7r = 20 + -2r + 2r

Combine like terms: -2r + 2r = 0
-8 + 7r = 20 + 0
-8 + 7r = 20

Add '8' to each side of the equation.
-8 + 8 + 7r = 20 + 8

Combine like terms: -8 + 8 = 0
0 + 7r = 20 + 8
7r = 20 + 8

Combine like terms: 20 + 8 = 28
7r = 28

Divide each side by '7'.
r = 4

Simplifying
r = 4

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