32=9u-u

Solution for 32=9u-u equation:

Simplifying
32 = 9u + -1u

Combine like terms: 9u + -1u = 8u
32 = 8u

Solving
32 = 8u

Solving for variable 'u'.

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

Add '-8u' to each side of the equation.
32 + -8u = 8u + -8u

Combine like terms: 8u + -8u = 0
32 + -8u = 0

Add '-32' to each side of the equation.
32 + -32 + -8u = 0 + -32

Combine like terms: 32 + -32 = 0
0 + -8u = 0 + -32
-8u = 0 + -32

Combine like terms: 0 + -32 = -32
-8u = -32

Divide each side by '-8'.
u = 4

Simplifying
u = 4