Question

29. Calculaţi: a) [(2057 – 2019) +62] +900 = b) [(43 · 39 +39 · 57) – 242 : 11] : 3878 = = c) 47 – 13+ [101 – (324: 18+1): 19] : 100 =​

Answer 1

Salutare!:)

[(2057 – 2019) +62] +900 =

(38+62)+900=

100+900=

1000

[(43×39+39×57)–242:11]:3878=

[(1677+2223)-22]:3878=

(3900-22):3878=

3878:3878=

1

47-13+[101-(324:18+1):19]:100=

47-13+[101-(18+1):19]:100=

47-13+(101-19:19):100=

47-13+(101-1):100=

47-13+100:100=

47-13+1=

34+1=

35

Succes!