7r+8+r=-8

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


Simplifying
7r + 8 + r = -8

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

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

Solving
8 + 8r = -8

Solving for variable 'r'.

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

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

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

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

Divide each side by '8'.
r = -2

Simplifying
r = -2

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