Question

Answer 1

16/15

12/13

26/9

 

Answer 2

a.16/15

b.12/13

c.26/9

Answer 3

16/15

12/13

26/9

Answer 4

\(a,\dfrac{7}{15}+\dfrac{4}{5}=\dfrac{7}{15}+\dfrac{12}{15}=\dfrac{19}{15}\\ b,\dfrac{9}{13}\times\dfrac{4}{3}=\dfrac{3\times3\times4}{13\times3}=\dfrac{12}{13}\\ c,4-\dfrac{5}{6}:\dfrac{3}{4}=4-\dfrac{5}{6}\times\dfrac{4}{3}=4-\dfrac{10}{9}=\dfrac{36}{9}-\dfrac{10}{9}=\dfrac{26}{9}\)

Answer 5

16/15

12/13

26/9

Answer 6

a) \(\dfrac{7}{15}+\dfrac{4}{5}=\dfrac{7}{15}+\dfrac{12}{15}=\dfrac{19}{15}\)

b) \(\dfrac{9}{13}\) x \(\dfrac{4}{3}=\dfrac{3x3x4}{13x3}=\dfrac{12}{13}\)

c) \(4-\dfrac{5}{6}:\dfrac{3}{4}=4-\dfrac{5}{6}\) x \(\dfrac{4}{3}=4-\dfrac{10}{9}=\dfrac{36}{9}-\dfrac{10}{9}=\dfrac{26}{9}\)