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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