-5r-7=8

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Solution for -5r-7=8 equation: 


Simplifying
-5r + -7 = 8

Reorder the terms:
-7 + -5r = 8

Solving
-7 + -5r = 8

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 + -5r = 8 + 7

Combine like terms: -7 + 7 = 0
0 + -5r = 8 + 7
-5r = 8 + 7

Combine like terms: 8 + 7 = 15
-5r = 15

Divide each side by '-5'.
r = -3

Simplifying
r = -3

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