13=-7x-6x

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Solution for 13=-7x-6x equation: 



13=-7x-6x

We move all terms to the left:

13-(-7x-6x)=0

We add all the numbers together, and all the variables

-(-13x)+13=0

We get rid of parentheses

13x+13=0

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

13x=-13

x=-13/13

x=-1

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