2+8u=9u

Solution for 2+8u=9u equation:

Simplifying
2 + 8u = 9u

Solving
2 + 8u = 9u

Solving for variable 'u'.

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

Add '-9u' to each side of the equation.
2 + 8u + -9u = 9u + -9u

Combine like terms: 8u + -9u = -1u
2 + -1u = 9u + -9u

Combine like terms: 9u + -9u = 0
2 + -1u = 0

Add '-2' to each side of the equation.
2 + -2 + -1u = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1u = 0 + -2
-1u = 0 + -2

Combine like terms: 0 + -2 = -2
-1u = -2

Divide each side by '-1'.
u = 2

Simplifying
u = 2