Respuesta :

5/7 + 3(2/5)

⇛5/7 + (15+2)/5

⇛5/7 + 28/5

⇛(25 + 296)/35

⇛321/35 Ans.

5/9 + 2(4/7)

⇛5/9 + (14+4)/7

⇛5/9 + 18/7

⇛(35+162)/63

⇛197/63 Ans.

6(2/6) + 4/11

⇛(36+6)/6 + 4/11

⇛42/6 + 4/11

⇛(462+24)/66

⇛486/66 Ans.

10(2/3) + 5(1/4)

⇛(30+2)/3 + (20+1)/4

⇛32/3 + 21/4

⇛(128+63)/12

⇛191/12 Ans.

9(1/2) + 2(4/7)

⇛(18+1)/2 + (14+4)/7

⇛19/2 + 18/7

⇛(133+36)/14

⇛169/14 Ans.

Hope this helps.