Question

найдите значение вырожения $7* (frac{1}{7}) в +62* frac{1}{7}$

Answer 1

7*1/49+62/7=1/7+62/7=63/7=9

Answer 2

1) 7 * (17)^2 = 749 = 17 
2) 17 + 62 * 17 = 17 * ( 1 + 62) = 17 * 63 = 637 = 9
Ответ 9