Question

Tính bằng 2 cách thuận tiện nhất:

7/11 : 3/ 5 +4/11 : 3/5 =?

(6,24 +1,26):0,75=?

Answer 1

DS:11/5 DS: 10

Answer 2

7/11:3/5+4/11:3/5

=(7/11+4/11):3/5

=1:3/5

=1x5/3

=\(\frac{5}{3}\)

(6,24+1,26);0,75

=7,5:0,75

=10

Answer 3

\(\frac{7}{11}:\frac{3}{5}+\frac{4}{11}:\frac{3}{5}=\frac{3}{5}:\left(\frac{7}{11}+\frac{4}{11}\right)=\frac{3}{5}:1=\frac{5}{3}\)

\(\left(6,24+1,26\right):0,75=7,5:0,75=10\)