-15.9=-3.1+u/8

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Solution for -15.9=-3.1+u/8 equation: 



-15.9=-3.1+u/8

We move all terms to the left:

-15.9-(-3.1+u/8)=0

We add all the numbers together, and all the variables

-(u/8-3.1)-15.9=0

We get rid of parentheses

-u/8+3.1-15.9=0

We multiply all the terms by the denominator


-u+(3.1)*8-(15.9)*8=0

We add all the numbers together, and all the variables

-1u-102.4=0

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

-u=102.4

u=102.4/-1

u=-102+0.40000000000001/1

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