answer: x=32
Explanation: to get 4/21 to x/168 divide 168 by 21 and you'll get 8 then you multiply 8 times 4 which equals 32 then the x turns into 32 which will give you 32/168
[tex] \frac{4}{21} = \frac{x}{168} \\ \\ 1. \: \frac{4}{21} \times 168 = x \\ \\ 2. \: \frac{672}{21} = x \\ \\ 3. \: 32 = x \\ \\ 4. \: x = 32[/tex]
