Question

calculeaza 68:2 +{564:6+(31x2 +15x3-117:3)]=; 1000- {409 x( 6:3)+5 6 :8 x5}=;
234:9+{4000-(31+7)x15}:5-219:3=

Answer 1

Explicație pas cu pas:

68:2+[564:6+(31×2+15×3-117:3)]=

34+[94+(62+45-39)]=

34+[94+(107-39)=

34+(94+68)=

34+162=196

1000-[409×(6:3)+56:8×5]=

1000-(409×2+7×5)=

1000-(818+35)=

1000-853=1853

234:9+[4000-(31+7)×15]:5-219:3=

26+(4000-38×15):5-73=

26+(4000-570):5-73=

26+3430:5-73=

26+686-73=

712-73=639