-7r-2+9r+7=

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Solution for -7r-2+9r+7= equation:


Simplifying
-7r + -2 + 9r + 7 = 0

Reorder the terms:
-2 + 7 + -7r + 9r = 0

Combine like terms: -2 + 7 = 5
5 + -7r + 9r = 0

Combine like terms: -7r + 9r = 2r
5 + 2r = 0

Solving
5 + 2r = 0

Solving for variable 'r'.

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

Add '-5' to each side of the equation.
5 + -5 + 2r = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2r = 0 + -5
2r = 0 + -5

Combine like terms: 0 + -5 = -5
2r = -5

Divide each side by '2'.
r = -2.5

Simplifying
r = -2.5

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