2(-7r-8)=-86

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Solution for 2(-7r-8)=-86 equation: 


Simplifying
2(-7r + -8) = -86

Reorder the terms:
2(-8 + -7r) = -86
(-8 * 2 + -7r * 2) = -86
(-16 + -14r) = -86

Solving
-16 + -14r = -86

Solving for variable 'r'.

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

Add '16' to each side of the equation.
-16 + 16 + -14r = -86 + 16

Combine like terms: -16 + 16 = 0
0 + -14r = -86 + 16
-14r = -86 + 16

Combine like terms: -86 + 16 = -70
-14r = -70

Divide each side by '-14'.
r = 5

Simplifying
r = 5

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