21=-6w+3(w+8)

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Solution for 21=-6w+3(w+8) equation:


Simplifying
21 = -6w + 3(w + 8)

Reorder the terms:
21 = -6w + 3(8 + w)
21 = -6w + (8 * 3 + w * 3)
21 = -6w + (24 + 3w)

Reorder the terms:
21 = 24 + -6w + 3w

Combine like terms: -6w + 3w = -3w
21 = 24 + -3w

Solving
21 = 24 + -3w

Solving for variable 'w'.

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

Add '3w' to each side of the equation.
21 + 3w = 24 + -3w + 3w

Combine like terms: -3w + 3w = 0
21 + 3w = 24 + 0
21 + 3w = 24

Add '-21' to each side of the equation.
21 + -21 + 3w = 24 + -21

Combine like terms: 21 + -21 = 0
0 + 3w = 24 + -21
3w = 24 + -21

Combine like terms: 24 + -21 = 3
3w = 3

Divide each side by '3'.
w = 1

Simplifying
w = 1

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