20=u/4-13

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Solution for 20=u/4-13 equation: 



20=u/4-13

We move all terms to the left:

20-(u/4-13)=0

We get rid of parentheses

-u/4+13+20=0

We multiply all the terms by the denominator


-u+13*4+20*4=0

We add all the numbers together, and all the variables

-1u+132=0

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

-u=-132

u=-132/-1

u=+132

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