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

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


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

Reorder the terms:
-21 + 3w = -3(w + 3)

Reorder the terms:
-21 + 3w = -3(3 + w)
-21 + 3w = (3 * -3 + w * -3)
-21 + 3w = (-9 + -3w)

Solving
-21 + 3w = -9 + -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 + 3w = -9 + -3w + 3w

Combine like terms: 3w + 3w = 6w
-21 + 6w = -9 + -3w + 3w

Combine like terms: -3w + 3w = 0
-21 + 6w = -9 + 0
-21 + 6w = -9

Add '21' to each side of the equation.
-21 + 21 + 6w = -9 + 21

Combine like terms: -21 + 21 = 0
0 + 6w = -9 + 21
6w = -9 + 21

Combine like terms: -9 + 21 = 12
6w = 12

Divide each side by '6'.
w = 2

Simplifying
w = 2

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