21=4w+5(w+6)

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Solution for 21=4w+5(w+6) equation:


Simplifying
21 = 4w + 5(w + 6)

Reorder the terms:
21 = 4w + 5(6 + w)
21 = 4w + (6 * 5 + w * 5)
21 = 4w + (30 + 5w)

Reorder the terms:
21 = 30 + 4w + 5w

Combine like terms: 4w + 5w = 9w
21 = 30 + 9w

Solving
21 = 30 + 9w

Solving for variable 'w'.

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

Add '-9w' to each side of the equation.
21 + -9w = 30 + 9w + -9w

Combine like terms: 9w + -9w = 0
21 + -9w = 30 + 0
21 + -9w = 30

Add '-21' to each side of the equation.
21 + -21 + -9w = 30 + -21

Combine like terms: 21 + -21 = 0
0 + -9w = 30 + -21
-9w = 30 + -21

Combine like terms: 30 + -21 = 9
-9w = 9

Divide each side by '-9'.
w = -1

Simplifying
w = -1

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