5r-6-7r=-20

Solution for 5r-6-7r=-20 equation:

Simplifying
5r + -6 + -7r = -20

Reorder the terms:
-6 + 5r + -7r = -20

Combine like terms: 5r + -7r = -2r
-6 + -2r = -20

Solving
-6 + -2r = -20

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 + -2r = -20 + 6

Combine like terms: -6 + 6 = 0
0 + -2r = -20 + 6
-2r = -20 + 6

Combine like terms: -20 + 6 = -14
-2r = -14

Divide each side by '-2'.
r = 7

Simplifying
r = 7