21=2(w+3)+3w

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Solution for 21=2(w+3)+3w equation:


Simplifying
21 = 2(w + 3) + 3w

Reorder the terms:
21 = 2(3 + w) + 3w
21 = (3 * 2 + w * 2) + 3w
21 = (6 + 2w) + 3w

Combine like terms: 2w + 3w = 5w
21 = 6 + 5w

Solving
21 = 6 + 5w

Solving for variable 'w'.

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

Add '-5w' to each side of the equation.
21 + -5w = 6 + 5w + -5w

Combine like terms: 5w + -5w = 0
21 + -5w = 6 + 0
21 + -5w = 6

Add '-21' to each side of the equation.
21 + -21 + -5w = 6 + -21

Combine like terms: 21 + -21 = 0
0 + -5w = 6 + -21
-5w = 6 + -21

Combine like terms: 6 + -21 = -15
-5w = -15

Divide each side by '-5'.
w = 3

Simplifying
w = 3

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