x+13=-9x

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Solution for x+13=-9x equation: 



x+13=-9x

We move all terms to the left:

x+13-(-9x)=0

We get rid of parentheses

x+9x+13=0

We add all the numbers together, and all the variables

10x+13=0

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

10x=-13

x=-13/10

x=-1+3/10

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