-8-7r=-2r-7(8-r)

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


Simplifying
-8 + -7r = -2r + -7(8 + -1r)
-8 + -7r = -2r + (8 * -7 + -1r * -7)
-8 + -7r = -2r + (-56 + 7r)

Reorder the terms:
-8 + -7r = -56 + -2r + 7r

Combine like terms: -2r + 7r = 5r
-8 + -7r = -56 + 5r

Solving
-8 + -7r = -56 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
-8 + -7r + -5r = -56 + 5r + -5r

Combine like terms: -7r + -5r = -12r
-8 + -12r = -56 + 5r + -5r

Combine like terms: 5r + -5r = 0
-8 + -12r = -56 + 0
-8 + -12r = -56

Add '8' to each side of the equation.
-8 + 8 + -12r = -56 + 8

Combine like terms: -8 + 8 = 0
0 + -12r = -56 + 8
-12r = -56 + 8

Combine like terms: -56 + 8 = -48
-12r = -48

Divide each side by '-12'.
r = 4

Simplifying
r = 4

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