-1=2(u+2)+3u

Solution for -1=2(u+2)+3u equation:

Simplifying
-1 = 2(u + 2) + 3u

Reorder the terms:
-1 = 2(2 + u) + 3u
-1 = (2 * 2 + u * 2) + 3u
-1 = (4 + 2u) + 3u

Combine like terms: 2u + 3u = 5u
-1 = 4 + 5u

Solving
-1 = 4 + 5u

Solving for variable 'u'.

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

Add '-5u' to each side of the equation.
-1 + -5u = 4 + 5u + -5u

Combine like terms: 5u + -5u = 0
-1 + -5u = 4 + 0
-1 + -5u = 4

Add '1' to each side of the equation.
-1 + 1 + -5u = 4 + 1

Combine like terms: -1 + 1 = 0
0 + -5u = 4 + 1
-5u = 4 + 1

Combine like terms: 4 + 1 = 5
-5u = 5

Divide each side by '-5'.
u = -1

Simplifying
u = -1