8-r=3r

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Solution for 8-r=3r equation:


Simplifying
8 + -1r = 3r

Solving
8 + -1r = 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
8 + -1r + -3r = 3r + -3r

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

Combine like terms: 3r + -3r = 0
8 + -4r = 0

Add '-8' to each side of the equation.
8 + -8 + -4r = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -4r = 0 + -8
-4r = 0 + -8

Combine like terms: 0 + -8 = -8
-4r = -8

Divide each side by '-4'.
r = 2

Simplifying
r = 2

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