3w+15-7w=-7

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


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

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

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

Solving
15 + -4w = -7

Solving for variable 'w'.

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

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 = -22
-4w = -22

Divide each side by '-4'.
w = 5.5

Simplifying
w = 5.5

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