6+12-18=-4u+6+8u

Solution for 6+12-18=-4u+6+8u equation:

Simplifying
6 + 12 + -18 = -4u + 6 + 8u

Combine like terms: 6 + 12 = 18
18 + -18 = -4u + 6 + 8u

Combine like terms: 18 + -18 = 0
0 = -4u + 6 + 8u

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

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

Solving
0 = 6 + 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
0 + -4u = 6 + 4u + -4u
Remove the zero:
-4u = 6 + 4u + -4u

Combine like terms: 4u + -4u = 0
-4u = 6 + 0
-4u = 6

Divide each side by '-4'.
u = -1.5

Simplifying
u = -1.5