115-32=r

Solution for 115-32=r equation:

Simplifying
115 + -32 = r

Combine like terms: 115 + -32 = 83
83 = r

Solving
83 = 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.
83 + -1r = r + -1r

Combine like terms: r + -1r = 0
83 + -1r = 0

Add '-83' to each side of the equation.
83 + -83 + -1r = 0 + -83

Combine like terms: 83 + -83 = 0
0 + -1r = 0 + -83
-1r = 0 + -83

Combine like terms: 0 + -83 = -83
-1r = -83

Divide each side by '-1'.
r = 83

Simplifying
r = 83