Question

chuyển hỗn số thành phân số rồi tính:

\(7\frac{8}{4}\)\(\times\)\(1\frac{4}{5}\)

Answer 1

\(9\)x \(\frac{9}{5}\)= \(\frac{81}{5}\)

tkmk nha

Answer 2

\(7\frac{8}{4}=9\)

\(1\frac{4}{5}=\frac{9}{5}\)

\(9\times\frac{9}{5}=\frac{81}{5}=16\frac{1}{5}\)

Answer 3

\(7\frac{8}{4}\)X\(1\frac{4}{5}\)

=\(9\)X\(\frac{9}{5}\)

=\(\frac{81}{5}\)

=16,2

Answer 4

\(7\frac{8}{4}\cdot1\frac{4}{5}=\frac{9}{1}\cdot\frac{9}{5}=\frac{81}{5}\)

Answer 5

81/5 nha bạn

Answer 6

81 phần 5 

Answer 7

= 81/5

Answer 8

7 8/4=36/4

1 4/5=9/5

36/4+9/5=180/20+36/20

        =216/20=54/5