-8(u+9)=-5u-42

Solution for -8(u+9)=-5u-42 equation:

Simplifying
-8(u + 9) = -5u + -42

Reorder the terms:
-8(9 + u) = -5u + -42
(9 * -8 + u * -8) = -5u + -42
(-72 + -8u) = -5u + -42

Reorder the terms:
-72 + -8u = -42 + -5u

Solving
-72 + -8u = -42 + -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.
-72 + -8u + 5u = -42 + -5u + 5u

Combine like terms: -8u + 5u = -3u
-72 + -3u = -42 + -5u + 5u

Combine like terms: -5u + 5u = 0
-72 + -3u = -42 + 0
-72 + -3u = -42

Add '72' to each side of the equation.
-72 + 72 + -3u = -42 + 72

Combine like terms: -72 + 72 = 0
0 + -3u = -42 + 72
-3u = -42 + 72

Combine like terms: -42 + 72 = 30
-3u = 30

Divide each side by '-3'.
u = -10

Simplifying
u = -10