5r+8r+7r-6=

Solution for 5r+8r+7r-6= equation:

Simplifying
5r + 8r + 7r + -6 = 0

Reorder the terms:
-6 + 5r + 8r + 7r = 0

Combine like terms: 5r + 8r = 13r
-6 + 13r + 7r = 0

Combine like terms: 13r + 7r = 20r
-6 + 20r = 0

Solving
-6 + 20r = 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 + 20r = 0 + 6

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

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

Divide each side by '20'.
r = 0.3

Simplifying
r = 0.3