Question

31•5+31•7+31•49-31•60​

Answer 1

dăm 31 factor comun:
31 * ( 5 + 7 + 49 - 60 ) =
= 31 * 1
= 31

Answer 2

Răspuns:

3,007

Explicație pas cu pas:

31·5≠155

31·7≠217

31·49≠1,519

31·60≠1,860

155+217≠372

1,519+1,860≠3,379

372-3,379≠3,007