3.2=-1.3+r

Solution for 3.2=-1.3+r equation:

Simplifying
3.2 = -1.3 + r

Solving
3.2 = -1.3 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
3.2 + -1r = -1.3 + r + -1r

Combine like terms: r + -1r = 0
3.2 + -1r = -1.3 + 0
3.2 + -1r = -1.3

Add '-3.2' to each side of the equation.
3.2 + -3.2 + -1r = -1.3 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -1r = -1.3 + -3.2
-1r = -1.3 + -3.2

Combine like terms: -1.3 + -3.2 = -4.5
-1r = -4.5

Divide each side by '-1'.
r = 4.5

Simplifying
r = 4.5