z+6+4z-9+8u=

Solution for z+6+4z-9+8u= equation:

Simplifying
z + 6 + 4z + -9 + 8u = 0

Reorder the terms:
6 + -9 + 8u + z + 4z = 0

Combine like terms: 6 + -9 = -3
-3 + 8u + z + 4z = 0

Combine like terms: z + 4z = 5z
-3 + 8u + 5z = 0

Solving
-3 + 8u + 5z = 0

Solving for variable 'u'.

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

Add '3' to each side of the equation.
-3 + 8u + 3 + 5z = 0 + 3

Reorder the terms:
-3 + 3 + 8u + 5z = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 8u + 5z = 0 + 3
8u + 5z = 0 + 3

Combine like terms: 0 + 3 = 3
8u + 5z = 3

Add '-5z' to each side of the equation.
8u + 5z + -5z = 3 + -5z

Combine like terms: 5z + -5z = 0
8u + 0 = 3 + -5z
8u = 3 + -5z

Divide each side by '8'.
u = 0.375 + -0.625z

Simplifying
u = 0.375 + -0.625z