Question

3+5/21=?

5-13/7=?

5/7×4=?

4:1/5=?

Giải giúp mình với nhé 

 

Answer 1

3+5/21=3/1+5/21=68/21

5-13/7=22/7

5/7×4=20/7

4:1/5=?20

k mk nhé

# chikute #

Answer 2

3+\(\frac{5}{21}\)=\(\frac{68}{21}\)

5-\(\frac{13}{7}\)=\(\frac{22}{7}\)

\(\frac{5}{7}\)*4=\(\frac{20}{7}\)

4:\(\frac{1}{5}\)=20

Answer 3

Í lộn

5-13/17