Answer:
![(2107)/(5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/25jg5y4rgt67ep2f1kttbfmbo0aoyqikfv.png)
Explanation:
To write 421.4 in fraction form (with a numerator and the denominator), you must apply the following proccedure:
- Divide it by 1 (Then the denominator is 1 for now and the numerator 421.4).
- Multiply the numerator and the denominator by 10.
- Reduce the fraction.
Therefore, you obtain:
![(421.4)/(1)=(421.4*10)/(1*10)=(4214)/(10)=(2107)/(5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/d6n62w92p8uit3u658n7p8b16hjq5di37a.png)