6(u+7)+7u=-23

Solution for 6(u+7)+7u=-23 equation:

Simplifying
6(u + 7) + 7u = -23

Reorder the terms:
6(7 + u) + 7u = -23
(7 * 6 + u * 6) + 7u = -23
(42 + 6u) + 7u = -23

Combine like terms: 6u + 7u = 13u
42 + 13u = -23

Solving
42 + 13u = -23

Solving for variable 'u'.

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

Add '-42' to each side of the equation.
42 + -42 + 13u = -23 + -42

Combine like terms: 42 + -42 = 0
0 + 13u = -23 + -42
13u = -23 + -42

Combine like terms: -23 + -42 = -65
13u = -65

Divide each side by '13'.
u = -5

Simplifying
u = -5