13=-7x+55

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Solution for 13=-7x+55 equation: 



13=-7x+55

We move all terms to the left:

13-(-7x+55)=0

We get rid of parentheses

7x-55+13=0

We add all the numbers together, and all the variables

7x-42=0

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

7x=42

x=42/7

x=6

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