7w+4=8w-9

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Solution for 7w+4=8w-9 equation: 



7w+4=8w-9

We move all terms to the left:

7w+4-(8w-9)=0

We get rid of parentheses

7w-8w+9+4=0

We add all the numbers together, and all the variables

-1w+13=0

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

-w=-13

w=-13/-1

w=+13

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