6=6-5r-7r

Solution for 6=6-5r-7r equation:

Simplifying
6 = 6 + -5r + -7r

Combine like terms: -5r + -7r = -12r
6 = 6 + -12r

Add '-6' to each side of the equation.
6 + -6 = 6 + -6 + -12r

Combine like terms: 6 + -6 = 0
0 = 6 + -6 + -12r

Combine like terms: 6 + -6 = 0
0 = 0 + -12r
0 = -12r

Solving
0 = -12r

Solving for variable 'r'.

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

Add '12r' to each side of the equation.
0 + 12r = -12r + 12r
Remove the zero:
12r = -12r + 12r

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

Divide each side by '12'.
r = 0

Simplifying
r = 0