2(2u+4)-1(9+5)=-42

Solution for 2(2u+4)-1(9+5)=-42 equation:

Simplifying
2(2u + 4) + -1(9 + 5) = -42

Reorder the terms:
2(4 + 2u) + -1(9 + 5) = -42
(4 * 2 + 2u * 2) + -1(9 + 5) = -42
(8 + 4u) + -1(9 + 5) = -42

Combine like terms: 9 + 5 = 14
8 + 4u + -1(14) = -42

Multiply -1 * 14
8 + 4u + -14 = -42

Reorder the terms:
8 + -14 + 4u = -42

Combine like terms: 8 + -14 = -6
-6 + 4u = -42

Solving
-6 + 4u = -42

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 + 4u = -42 + 6

Combine like terms: -6 + 6 = 0
0 + 4u = -42 + 6
4u = -42 + 6

Combine like terms: -42 + 6 = -36
4u = -36

Divide each side by '4'.
u = -9

Simplifying
u = -9