90=w+w+(4w-6)

Solution for 90=w+w+(4w-6) equation:

Simplifying
90 = w + w + (4w + -6)

Reorder the terms:
90 = w + w + (-6 + 4w)

Remove parenthesis around (-6 + 4w)
90 = w + w + -6 + 4w

Reorder the terms:
90 = -6 + w + w + 4w

Combine like terms: w + w = 2w
90 = -6 + 2w + 4w

Combine like terms: 2w + 4w = 6w
90 = -6 + 6w

Solving
90 = -6 + 6w

Solving for variable 'w'.

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

Add '-6w' to each side of the equation.
90 + -6w = -6 + 6w + -6w

Combine like terms: 6w + -6w = 0
90 + -6w = -6 + 0
90 + -6w = -6

Add '-90' to each side of the equation.
90 + -90 + -6w = -6 + -90

Combine like terms: 90 + -90 = 0
0 + -6w = -6 + -90
-6w = -6 + -90

Combine like terms: -6 + -90 = -96
-6w = -96

Divide each side by '-6'.
w = 16

Simplifying
w = 16