-2(u+3)-6(u+9)=

Solution for -2(u+3)-6(u+9)= equation:

Simplifying
-2(u + 3) + -6(u + 9) = 0

Reorder the terms:
-2(3 + u) + -6(u + 9) = 0
(3 * -2 + u * -2) + -6(u + 9) = 0
(-6 + -2u) + -6(u + 9) = 0

Reorder the terms:
-6 + -2u + -6(9 + u) = 0
-6 + -2u + (9 * -6 + u * -6) = 0
-6 + -2u + (-54 + -6u) = 0

Reorder the terms:
-6 + -54 + -2u + -6u = 0

Combine like terms: -6 + -54 = -60
-60 + -2u + -6u = 0

Combine like terms: -2u + -6u = -8u
-60 + -8u = 0

Solving
-60 + -8u = 0

Solving for variable 'u'.

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

Add '60' to each side of the equation.
-60 + 60 + -8u = 0 + 60

Combine like terms: -60 + 60 = 0
0 + -8u = 0 + 60
-8u = 0 + 60

Combine like terms: 0 + 60 = 60
-8u = 60

Divide each side by '-8'.
u = -7.5

Simplifying
u = -7.5