-20=2(w-4)

Solution for -20=2(w-4) equation:

Simplifying
-20 = 2(w + -4)

Reorder the terms:
-20 = 2(-4 + w)
-20 = (-4 * 2 + w * 2)
-20 = (-8 + 2w)

Solving
-20 = -8 + 2w

Solving for variable 'w'.

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

Add '-2w' to each side of the equation.
-20 + -2w = -8 + 2w + -2w

Combine like terms: 2w + -2w = 0
-20 + -2w = -8 + 0
-20 + -2w = -8

Add '20' to each side of the equation.
-20 + 20 + -2w = -8 + 20

Combine like terms: -20 + 20 = 0
0 + -2w = -8 + 20
-2w = -8 + 20

Combine like terms: -8 + 20 = 12
-2w = 12

Divide each side by '-2'.
w = -6

Simplifying
w = -6