Question

3/4 + 5/6

7/6 - 5/9

6/25 x 15/8

24/35 : 15/7

Answer 1

\(\dfrac{3}{4}+\dfrac{5}{6}=\dfrac{18}{24}+\dfrac{20}{24}=\dfrac{38}{24}=\dfrac{19}{12}\)

\(\dfrac{7}{6}-\dfrac{5}{9}=\dfrac{63}{54}-\dfrac{30}{54}=\dfrac{33}{54}=\dfrac{11}{18}\)

\(\dfrac{6}{25}\)x\(\dfrac{15}{8}=\)\(\dfrac{90}{200}=\dfrac{9}{20}\)

\(\dfrac{24}{35}:\dfrac{15}{7}=\dfrac{24}{35}\)x\(\dfrac{7}{15}=\)\(\dfrac{168}{525}=\dfrac{56}{175}\)

Answer 2

câu cuối chọn a.72/49 b.8/25 c.25/8 d.9/28 chọn cái nào ?