3w-7=w-15

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



3w-7=w-15

We move all terms to the left:

3w-7-(w-15)=0

We get rid of parentheses

3w-w+15-7=0

We add all the numbers together, and all the variables

2w+8=0

We move all terms containing w to the left, all other terms to the right

2w=-8

w=-8/2

w=-4

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