Respuesta :

iTSjUstRyaNt
First, 5/3 = 1.6
21 x 1.6 = 34.99999999
But, when I put it in a calculator, the 1.6 was repeated so:
Round 34.99999999 to 35
35 books
idkwhat1
It's the same as writing them as fractions
[tex] \frac{5}{3} = \frac{x}{21} [/tex]
x= books

Cross multiply.
5×21
And
3×x

[tex]105 = 3x[/tex]
divide 3 on both sides

x=35