-3(u+2)=4u-20

Solution for -3(u+2)=4u-20 equation:

Simplifying
-3(u + 2) = 4u + -20

Reorder the terms:
-3(2 + u) = 4u + -20
(2 * -3 + u * -3) = 4u + -20
(-6 + -3u) = 4u + -20

Reorder the terms:
-6 + -3u = -20 + 4u

Solving
-6 + -3u = -20 + 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
-6 + -3u + -4u = -20 + 4u + -4u

Combine like terms: -3u + -4u = -7u
-6 + -7u = -20 + 4u + -4u

Combine like terms: 4u + -4u = 0
-6 + -7u = -20 + 0
-6 + -7u = -20

Add '6' to each side of the equation.
-6 + 6 + -7u = -20 + 6

Combine like terms: -6 + 6 = 0
0 + -7u = -20 + 6
-7u = -20 + 6

Combine like terms: -20 + 6 = -14
-7u = -14

Divide each side by '-7'.
u = 2

Simplifying
u = 2