-15=3w-7-7w

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Solution for -15=3w-7-7w equation:


Simplifying
-15 = 3w + -7 + -7w

Reorder the terms:
-15 = -7 + 3w + -7w

Combine like terms: 3w + -7w = -4w
-15 = -7 + -4w

Solving
-15 = -7 + -4w

Solving for variable 'w'.

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

Add '4w' to each side of the equation.
-15 + 4w = -7 + -4w + 4w

Combine like terms: -4w + 4w = 0
-15 + 4w = -7 + 0
-15 + 4w = -7

Add '15' to each side of the equation.
-15 + 15 + 4w = -7 + 15

Combine like terms: -15 + 15 = 0
0 + 4w = -7 + 15
4w = -7 + 15

Combine like terms: -7 + 15 = 8
4w = 8

Divide each side by '4'.
w = 2

Simplifying
w = 2

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