-9w-21=3(w+9)

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Solution for -9w-21=3(w+9) equation:


Simplifying
-9w + -21 = 3(w + 9)

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

Reorder the terms:
-21 + -9w = 3(9 + w)
-21 + -9w = (9 * 3 + w * 3)
-21 + -9w = (27 + 3w)

Solving
-21 + -9w = 27 + 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 + -9w + -3w = 27 + 3w + -3w

Combine like terms: -9w + -3w = -12w
-21 + -12w = 27 + 3w + -3w

Combine like terms: 3w + -3w = 0
-21 + -12w = 27 + 0
-21 + -12w = 27

Add '21' to each side of the equation.
-21 + 21 + -12w = 27 + 21

Combine like terms: -21 + 21 = 0
0 + -12w = 27 + 21
-12w = 27 + 21

Combine like terms: 27 + 21 = 48
-12w = 48

Divide each side by '-12'.
w = -4

Simplifying
w = -4

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