Question

TRÌNH BÀY ĐẦY ĐỦ: 9/5+3/4, 7/9-2/3

Answer 1

36/20+15/20= 51/20

7/9-6/9= 1/9

Answer 2

\(\dfrac{9}{5}+\dfrac{3}{4}=\dfrac{36}{20}+\dfrac{15}{20}=\dfrac{36+15}{20}=\dfrac{51}{20}\)

\(\dfrac{7}{9}-\dfrac{2}{3}=\dfrac{7}{9}-\dfrac{6}{9}=\dfrac{1}{9}\)