Question

Cíu mk với!!! Híp mi

Answer 1

\(a,\dfrac{5}{4}+\dfrac{3}{8}=\dfrac{10}{8}+\dfrac{3}{8}=\dfrac{13}{8}\)

\(b,\dfrac{2}{3}-\dfrac{3}{8}=\dfrac{16}{24}-\dfrac{9}{24}=\dfrac{7}{24}\)

\(c,\dfrac{5}{7}\times4=\dfrac{20}{7}\)

\(d,\dfrac{9}{11}:\dfrac{2}{7}=\dfrac{9}{11}\times\dfrac{7}{2}=\dfrac{63}{22}\)

 

Answer 2

\(a,\dfrac{13}{8}b,\dfrac{7}{24}c,\dfrac{20}{7}d,\dfrac{63}{22}\)

Answer 3

a)\(\dfrac{5}{4}+\dfrac{3}{8}=\dfrac{10}{8}+\dfrac{3}{8}=\dfrac{13}{8}\)

b) \(\dfrac{2}{3}-\dfrac{3}{8}=\dfrac{16}{24}-\dfrac{9}{24}=\dfrac{7}{24}\)

c) \(\dfrac{5}{7}\times4=\dfrac{20}{7}\)

d) \(\dfrac{9}{11}\div\dfrac{2}{7}=\dfrac{9}{11}\times\dfrac{7}{2}=\dfrac{63}{22}\)

Answer 4

a:\(\dfrac{13}{8}\)

b:\(\dfrac{7}{24}\)

c:\(\dfrac{66}{22}\)

Answer 5

5/4+3/8=40/32+12/32=52/32 

2/3-3/8=16/24-9/24=7/24

5/7nhân4=5/7nhân4/1=20/7