6u+3(u+2)=15

Solution for 6u+3(u+2)=15 equation:

Simplifying
6u + 3(u + 2) = 15

Reorder the terms:
6u + 3(2 + u) = 15
6u + (2 * 3 + u * 3) = 15
6u + (6 + 3u) = 15

Reorder the terms:
6 + 6u + 3u = 15

Combine like terms: 6u + 3u = 9u
6 + 9u = 15

Solving
6 + 9u = 15

Solving for variable 'u'.

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

Add '-6' to each side of the equation.
6 + -6 + 9u = 15 + -6

Combine like terms: 6 + -6 = 0
0 + 9u = 15 + -6
9u = 15 + -6

Combine like terms: 15 + -6 = 9
9u = 9

Divide each side by '9'.
u = 1

Simplifying
u = 1