31=2r+6r-11

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Solution for 31=2r+6r-11 equation:


Simplifying
31 = 2r + 6r + -11

Reorder the terms:
31 = -11 + 2r + 6r

Combine like terms: 2r + 6r = 8r
31 = -11 + 8r

Solving
31 = -11 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
31 + -8r = -11 + 8r + -8r

Combine like terms: 8r + -8r = 0
31 + -8r = -11 + 0
31 + -8r = -11

Add '-31' to each side of the equation.
31 + -31 + -8r = -11 + -31

Combine like terms: 31 + -31 = 0
0 + -8r = -11 + -31
-8r = -11 + -31

Combine like terms: -11 + -31 = -42
-8r = -42

Divide each side by '-8'.
r = 5.25

Simplifying
r = 5.25

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