Question

1)Calculati :
a) 9+{13-[5+(7-2)]}
b)13+{16+[65-(36+24)]-20}
c)(217-100)-17
d)217-(100-17)
e)12.563-[1.456-(9.876-867)]
Vreau si rezolvarile va rog frumos ajutati-ma
Sunt pe clasa a v-a

Answer 1

a)9+{13-[5+(7-2)]}=
9+[13-(5+5)]=
9+(13-10)=
9+3=
12
b)13+{16+[65-(36+24)]-20}=
13+[16+(65-60)-20]=
13+(16+5-20)=
13+0=13
c)(217-100)-17=
117-17=
100
d)217-(100-17)=
217-83=
134
e)12.563-[1456-(9876-867)]=
12.563-(1456-9009)=
12.563-(-8366)=
12.563+8.366=
20.929