7w-21=-7(w+7)

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Solution for 7w-21=-7(w+7) equation:


Simplifying
7w + -21 = -7(w + 7)

Reorder the terms:
-21 + 7w = -7(w + 7)

Reorder the terms:
-21 + 7w = -7(7 + w)
-21 + 7w = (7 * -7 + w * -7)
-21 + 7w = (-49 + -7w)

Solving
-21 + 7w = -49 + -7w

Solving for variable 'w'.

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

Add '7w' to each side of the equation.
-21 + 7w + 7w = -49 + -7w + 7w

Combine like terms: 7w + 7w = 14w
-21 + 14w = -49 + -7w + 7w

Combine like terms: -7w + 7w = 0
-21 + 14w = -49 + 0
-21 + 14w = -49

Add '21' to each side of the equation.
-21 + 21 + 14w = -49 + 21

Combine like terms: -21 + 21 = 0
0 + 14w = -49 + 21
14w = -49 + 21

Combine like terms: -49 + 21 = -28
14w = -28

Divide each side by '14'.
w = -2

Simplifying
w = -2

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