Răspuns:
6.a)96,b)-58,c)140027
7.a)455537055,b)30965640,c)4658
Explicație pas cu pas:
6.a) -12×[-17+15×(+59-27-30)-21]=
- -12×(-17+15×2-21)=
- -12×(-17+30-21)=
- -12×(-8) =
- 95
b)-29×[-73+21×(47+11+32)+155]=
- +29×[-73+21×(-4)+155]=
- +29×(-73+84+155)=
- +29+(-2)=
- -58
c)-31×[+65-37×(61+26+36)-31]=
- -31×(65-37×123-31)=
- -31×(-4517)=
- 140027
7.a)-139×[+711-3921×(417+395+24)]=
- -139×(711-3921×836)=
- -139×(711-3277956)=
- -139×(-3277245)=
- 455537055
b)+249×[-317×(193+227-35)-2315]=
- +249×(-317×385-2315)=
- +249×(-122045-2315)=
- +249×(-124360)=
- 30965640
c)+137×[+462-214+(-626+332+296)]=
- +137×(462-214×2)=
- +137×(462-428)=
- +137×34=
- 4658
Sper ca te-am ajutat
