1) пример. Ответ: 23,3659

12,5316 + 4,3243 = 16,8559

16,8559 + 2,54 = 19,3959

19,3959 + 4,27 = 23,3659

2) пример. Ответ: 28,1078

1,4329 + 8,3249 = 9,7578

9,7578 + 5,63 = 15,3878

15,3878 + 12,72 = 28,1078