Question

Tính rồi rút gọn:

a) 8/15+2/3

b) 3/7+4/8

Answer 1

\(\frac{8}{15}+\frac{2}{3}=\frac{8}{15}+\frac{10}{15}=\frac{18}{15}=\frac{6}{5}\)

\(\frac{3}{7}+\frac{4}{8}=\frac{24}{56}+\frac{28}{56}=\frac{52}{56}=\frac{13}{14}\)

Answer 2

\(\frac{8}{15}+\frac{2}{3}=\frac{8}{15}+\frac{10}{15}=\frac{18}{15}=\frac{6}{5}\)

\(\frac{3}{7}+\frac{4}{8}=\frac{24}{56}+\frac{21}{56}=\frac{45}{56}\)

Answer 3

A)2/3=10/15

8/15+10/15=18/15=9/5

B)3/7=24/56

4/8=28/56

24/56+28/56=13/14

Answer 4

a)  8/15 + 2/3 = 8/15 +  10/15 = 18/15  = 6/5

b)  3/7 + 4/8 = 12/56 = 6/23

k mình nha

Answer 5

A)6/5

Answer 6

a) 6/5

b) 13/14

Answer 7

A.8/15+2/3=14/15

B.3/7+4/8=13/14

Answer 8

a) 8/15 + 2/3= 8/15+10/15

                     = 18/15=6/5

b) 3/7+4/8= 12/56=6/23

Answer 9

Trả lời :

\(\frac{8}{15}+\frac{2}{3}=\frac{8}{15}+\frac{10}{15}=\frac{8+10}{15}=\frac{18}{15}\)

\(\frac{3}{7}+\frac{4}{8}=\frac{24}{56}+\frac{28}{56}=\frac{24+28}{56}=\frac{52}{56}=\frac{13}{14}\)