4r-20=-8+r

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Solution for 4r-20=-8+r equation:


Simplifying
4r + -20 = -8 + r

Reorder the terms:
-20 + 4r = -8 + r

Solving
-20 + 4r = -8 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-20 + 4r + -1r = -8 + r + -1r

Combine like terms: 4r + -1r = 3r
-20 + 3r = -8 + r + -1r

Combine like terms: r + -1r = 0
-20 + 3r = -8 + 0
-20 + 3r = -8

Add '20' to each side of the equation.
-20 + 20 + 3r = -8 + 20

Combine like terms: -20 + 20 = 0
0 + 3r = -8 + 20
3r = -8 + 20

Combine like terms: -8 + 20 = 12
3r = 12

Divide each side by '3'.
r = 4

Simplifying
r = 4

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