13=-u/4

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Solution for 13=-u/4 equation: 



13=-u/4

We move all terms to the left:

13-(-u/4)=0

We get rid of parentheses

u/4+13=0

We multiply all the terms by the denominator


u+13*4=0

We add all the numbers together, and all the variables

u+52=0

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

u=-52

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