-3(r-0.3)=3

Solution for -3(r-0.3)=3 equation:

Simplifying
-3(r + -0.3) = 3

Reorder the terms:
-3(-0.3 + r) = 3
(-0.3 * -3 + r * -3) = 3
(0.9 + -3r) = 3

Solving
0.9 + -3r = 3

Solving for variable 'r'.

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

Add '-0.9' to each side of the equation.
0.9 + -0.9 + -3r = 3 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -3r = 3 + -0.9
-3r = 3 + -0.9

Combine like terms: 3 + -0.9 = 2.1
-3r = 2.1

Divide each side by '-3'.
r = -0.7

Simplifying
r = -0.7