7w+21=-5(w+3)

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Solution for 7w+21=-5(w+3) equation:


Simplifying
7w + 21 = -5(w + 3)

Reorder the terms:
21 + 7w = -5(w + 3)

Reorder the terms:
21 + 7w = -5(3 + w)
21 + 7w = (3 * -5 + w * -5)
21 + 7w = (-15 + -5w)

Solving
21 + 7w = -15 + -5w

Solving for variable 'w'.

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

Add '5w' to each side of the equation.
21 + 7w + 5w = -15 + -5w + 5w

Combine like terms: 7w + 5w = 12w
21 + 12w = -15 + -5w + 5w

Combine like terms: -5w + 5w = 0
21 + 12w = -15 + 0
21 + 12w = -15

Add '-21' to each side of the equation.
21 + -21 + 12w = -15 + -21

Combine like terms: 21 + -21 = 0
0 + 12w = -15 + -21
12w = -15 + -21

Combine like terms: -15 + -21 = -36
12w = -36

Divide each side by '12'.
w = -3

Simplifying
w = -3

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