43/10 · 3/43 + 58/5 · 225/100 : 2,75 = 9 87/110
1) 43/10 · 3/43 = 3/10
2) 58/5 · 225/100 = (29·45)/(1·50) = 1305/50
3) 1305/50 : 2,75 = 1305/50 : 275/100 = 1305/50 · 100/275 = (261·2)/(1·55) = 522/55 = 9 27/55
4) 3/10 + 9 27/55 = 33/110 + 9 54/110 = 9 87/110
ответ: 9 целых 87/110.
