-15=6w+3(w+7)

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Solution for -15=6w+3(w+7) equation:


Simplifying
-15 = 6w + 3(w + 7)

Reorder the terms:
-15 = 6w + 3(7 + w)
-15 = 6w + (7 * 3 + w * 3)
-15 = 6w + (21 + 3w)

Reorder the terms:
-15 = 21 + 6w + 3w

Combine like terms: 6w + 3w = 9w
-15 = 21 + 9w

Solving
-15 = 21 + 9w

Solving for variable 'w'.

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

Add '-9w' to each side of the equation.
-15 + -9w = 21 + 9w + -9w

Combine like terms: 9w + -9w = 0
-15 + -9w = 21 + 0
-15 + -9w = 21

Add '15' to each side of the equation.
-15 + 15 + -9w = 21 + 15

Combine like terms: -15 + 15 = 0
0 + -9w = 21 + 15
-9w = 21 + 15

Combine like terms: 21 + 15 = 36
-9w = 36

Divide each side by '-9'.
w = -4

Simplifying
w = -4

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