-7-r=2r+8

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Solution for -7-r=2r+8 equation:


Simplifying
-7 + -1r = 2r + 8

Reorder the terms:
-7 + -1r = 8 + 2r

Solving
-7 + -1r = 8 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-7 + -1r + -2r = 8 + 2r + -2r

Combine like terms: -1r + -2r = -3r
-7 + -3r = 8 + 2r + -2r

Combine like terms: 2r + -2r = 0
-7 + -3r = 8 + 0
-7 + -3r = 8

Add '7' to each side of the equation.
-7 + 7 + -3r = 8 + 7

Combine like terms: -7 + 7 = 0
0 + -3r = 8 + 7
-3r = 8 + 7

Combine like terms: 8 + 7 = 15
-3r = 15

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

Simplifying
r = -5

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