3w+21=6(w+7)

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Solution for 3w+21=6(w+7) equation:


Simplifying
3w + 21 = 6(w + 7)

Reorder the terms:
21 + 3w = 6(w + 7)

Reorder the terms:
21 + 3w = 6(7 + w)
21 + 3w = (7 * 6 + w * 6)
21 + 3w = (42 + 6w)

Solving
21 + 3w = 42 + 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.
21 + 3w + -6w = 42 + 6w + -6w

Combine like terms: 3w + -6w = -3w
21 + -3w = 42 + 6w + -6w

Combine like terms: 6w + -6w = 0
21 + -3w = 42 + 0
21 + -3w = 42

Add '-21' to each side of the equation.
21 + -21 + -3w = 42 + -21

Combine like terms: 21 + -21 = 0
0 + -3w = 42 + -21
-3w = 42 + -21

Combine like terms: 42 + -21 = 21
-3w = 21

Divide each side by '-3'.
w = -7

Simplifying
w = -7

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