2(1r+8r-6)=0

Solution for 2(1r+8r-6)=0 equation:

Simplifying
2(1r + 8r + -6) = 0

Reorder the terms:
2(-6 + 1r + 8r) = 0

Combine like terms: 1r + 8r = 9r
2(-6 + 9r) = 0
(-6 * 2 + 9r * 2) = 0
(-12 + 18r) = 0

Solving
-12 + 18r = 0

Solving for variable 'r'.

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

Add '12' to each side of the equation.
-12 + 12 + 18r = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 18r = 0 + 12
18r = 0 + 12

Combine like terms: 0 + 12 = 12
18r = 12

Divide each side by '18'.
r = 0.6666666667

Simplifying
r = 0.6666666667