Question

Answer 1

Hi vọng có người giúp

Answer 2

a: =1/3+2/3+3/5=1+3/5=8/5

b: =2/5+3/8+3/5=1+3/8=11/8

Answer 3

a) ^{_{\(\dfrac{3}{9}+\dfrac{9}{15}+\dfrac{8}{12}=\dfrac{1}{3}+\dfrac{3}{5}+\dfrac{2}{3}=\left(\dfrac{1}{2}+\dfrac{2}{3}\right)+\dfrac{3}{5}=1+\dfrac{3}{5}=\dfrac{8}{5}\)}}

b) _{^{\(\dfrac{4}{10}+\dfrac{12}{32}+\dfrac{9}{15}=\dfrac{2}{5}+\dfrac{3}{8}+\dfrac{3}{5}=\left(\dfrac{2}{5}+\dfrac{3}{5}\right)+\dfrac{3}{8}=1+\dfrac{3}{8}=\dfrac{11}{8}\)}}

Answer 4

a) \(\dfrac{3}{9}+\dfrac{9}{15}+\dfrac{8}{12}=\dfrac{1}{3}+\dfrac{3}{5}+\dfrac{2}{3}=\left(\dfrac{1}{3}+\dfrac{2}{3}\right)+\dfrac{3}{5}=1+\dfrac{3}{5}=\dfrac{8}{5}\)

b) \(\dfrac{4}{10}+\dfrac{12}{32}+\dfrac{9}{15}=\dfrac{2}{5}+\dfrac{3}{8}+\dfrac{3}{5}=\left(\dfrac{2}{5}+\dfrac{3}{5}\right)+\dfrac{3}{8}=1+\dfrac{3}{8}=\dfrac{11}{8}\)

Answer 5

8/5

11/8