Răspuns:
5. a /__/__/__/__/__/__/__/__/__/__/__/__/__/__/__/__/__/..../
b /__/
570- 90=480
480: 16 = 30 (a)
17×30+90=600 (b)
6. 250 - 29 =221
221 : 13 = 17 (b)
14 × 17 + 29 = 267 (a)
7. 303 - 37 = 266
266 : 14 = 19 (b)
15 × 19 + 37 = 322 (a)
8. 574 - 49 =525
525 : 15 = 35 ( b)
16 × 35 + 49 = 609 (a)
Explicație pas cu pas: