128=4r

Solution for 128=4r equation:

Simplifying
128 = 4r

Solving
128 = 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
128 + -4r = 4r + -4r

Combine like terms: 4r + -4r = 0
128 + -4r = 0

Add '-128' to each side of the equation.
128 + -128 + -4r = 0 + -128

Combine like terms: 128 + -128 = 0
0 + -4r = 0 + -128
-4r = 0 + -128

Combine like terms: 0 + -128 = -128
-4r = -128

Divide each side by '-4'.
r = 32

Simplifying
r = 32