-3(r-1.3)=3

Solution for -3(r-1.3)=3 equation:

Simplifying
-3(r + -1.3) = 3

Reorder the terms:
-3(-1.3 + r) = 3
(-1.3 * -3 + r * -3) = 3
(3.9 + -3r) = 3

Solving
3.9 + -3r = 3

Solving for variable 'r'.

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

Add '-3.9' to each side of the equation.
3.9 + -3.9 + -3r = 3 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + -3r = 3 + -3.9
-3r = 3 + -3.9

Combine like terms: 3 + -3.9 = -0.9
-3r = -0.9

Divide each side by '-3'.
r = 0.3

Simplifying
r = 0.3