.9-2(3r+.2)=

Solution for .9-2(3r+.2)= equation:

Simplifying
0.9 + -2(3r + 0.2) = 0

Reorder the terms:
0.9 + -2(0.2 + 3r) = 0
0.9 + (0.2 * -2 + 3r * -2) = 0
0.9 + (-0.4 + -6r) = 0

Combine like terms: 0.9 + -0.4 = 0.5
0.5 + -6r = 0

Solving
0.5 + -6r = 0

Solving for variable 'r'.

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

Add '-0.5' to each side of the equation.
0.5 + -0.5 + -6r = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -6r = 0 + -0.5
-6r = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-6r = -0.5

Divide each side by '-6'.
r = 0.08333333333

Simplifying
r = 0.08333333333