Question

[(21 : 7) • (3 : 1)+6] - [(7 • 6) : (5 - 2) alguém me ajuda!!??

Answer 1

[(21 : 7) • (3 : 1)+6] - [(7 • 6) : (5 - 2)]=

[3 • 3 + 6] - [42 : 3] =

[9 + 6] - 14 =

15 - 14 =

1

Answer 2

[(21:7=3).(3:1=3)+6]-[(7.6):(5-2)]

[(3).(3)+6]-[(42):(3)]

(3.3=9+6=15)-(42:3=14)

15-14=1