-r-5(-2r-8)=16+r

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Solution for -r-5(-2r-8)=16+r equation:


Simplifying
-1r + -5(-2r + -8) = 16 + r

Reorder the terms:
-1r + -5(-8 + -2r) = 16 + r
-1r + (-8 * -5 + -2r * -5) = 16 + r
-1r + (40 + 10r) = 16 + r

Reorder the terms:
40 + -1r + 10r = 16 + r

Combine like terms: -1r + 10r = 9r
40 + 9r = 16 + r

Solving
40 + 9r = 16 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
40 + 9r + -1r = 16 + r + -1r

Combine like terms: 9r + -1r = 8r
40 + 8r = 16 + r + -1r

Combine like terms: r + -1r = 0
40 + 8r = 16 + 0
40 + 8r = 16

Add '-40' to each side of the equation.
40 + -40 + 8r = 16 + -40

Combine like terms: 40 + -40 = 0
0 + 8r = 16 + -40
8r = 16 + -40

Combine like terms: 16 + -40 = -24
8r = -24

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

Simplifying
r = -3

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