-33.6=4.2r

Solution for -33.6=4.2r equation:

Simplifying
-33.6 = 4.2r

Solving
-33.6 = 4.2r

Solving for variable 'r'.

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

Add '-4.2r' to each side of the equation.
-33.6 + -4.2r = 4.2r + -4.2r

Combine like terms: 4.2r + -4.2r = 0.0
-33.6 + -4.2r = 0.0

Add '33.6' to each side of the equation.
-33.6 + 33.6 + -4.2r = 0.0 + 33.6

Combine like terms: -33.6 + 33.6 = 0.0
0.0 + -4.2r = 0.0 + 33.6
-4.2r = 0.0 + 33.6

Combine like terms: 0.0 + 33.6 = 33.6
-4.2r = 33.6

Divide each side by '-4.2'.
r = -8

Simplifying
r = -8