Question

Calculați dau coroana și 1000 de puncte​

Answer 1

Răspuns:

a) 9-8+7×[6×5-4×(3+2)-1]:9

9-8+7×[30-20-1]:9

9-8+7×9:9

9-8+7=8

b) 98-2×{72-4×[48-6×(21:7+36:12)]}

98-2×[72-4×(48-6×6)]

98-2×(78-4×12)

98-2×30= 38

c) 121-21×5+336:[270-37×(256:128+576:144)]

121-105+336:(270-37×6)

121-105+336:48

121-105+7=23

d) 1510-5×(9600:30-15×54:9)+630

1510-5×(320-90)+630

1510-5×230+630

1510-1150+630

360+630=990