3u+(u-2)=10

Solution for 3u+(u-2)=10 equation:

Simplifying
3u + (u + -2) = 10

Reorder the terms:
3u + (-2 + u) = 10

Remove parenthesis around (-2 + u)
3u + -2 + u = 10

Reorder the terms:
-2 + 3u + u = 10

Combine like terms: 3u + u = 4u
-2 + 4u = 10

Solving
-2 + 4u = 10

Solving for variable 'u'.

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

Add '2' to each side of the equation.
-2 + 2 + 4u = 10 + 2

Combine like terms: -2 + 2 = 0
0 + 4u = 10 + 2
4u = 10 + 2

Combine like terms: 10 + 2 = 12
4u = 12

Divide each side by '4'.
u = 3

Simplifying
u = 3