-8r-7=-31

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Solution for -8r-7=-31 equation: 


Simplifying
-8r + -7 = -31

Reorder the terms:
-7 + -8r = -31

Solving
-7 + -8r = -31

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + -8r = -31 + 7

Combine like terms: -7 + 7 = 0
0 + -8r = -31 + 7
-8r = -31 + 7

Combine like terms: -31 + 7 = -24
-8r = -24

Divide each side by '-8'.
r = 3

Simplifying
r = 3

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