9r+7-3r-1=

Solution for 9r+7-3r-1= equation:

Simplifying
9r + 7 + -3r + -1 = 0

Reorder the terms:
7 + -1 + 9r + -3r = 0

Combine like terms: 7 + -1 = 6
6 + 9r + -3r = 0

Combine like terms: 9r + -3r = 6r
6 + 6r = 0

Solving
6 + 6r = 0

Solving for variable 'r'.

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

Add '-6' to each side of the equation.
6 + -6 + 6r = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 6r = 0 + -6
6r = 0 + -6

Combine like terms: 0 + -6 = -6
6r = -6

Divide each side by '6'.
r = -1

Simplifying
r = -1