Question

a) -3-10x[362-10x(-24-2x3)]
b) -10x{100-[100-(100-1)]}
c)-1+5x[(-4-2)x(-5)-17]-(+18-10)x(+7)
d){-3x[-7x(15-10-2)-3x(-8)+5]+20-4}x(+2)

Dau coroana daca imi raspunde cnv in 30 min

Answer 1

a) -3-10×[362-10×(-24-2×3)]=
=-3-10×[362-10× (24-6)]=
=-3-10×(362-10×18)=
=-3-10×(362-180)=
=-3-10×182=
=-3-1820=
=-1823
b)-10×{100-[100-(100-1)]}=
=-10×[100-(100-99)]=
=-10×(100-1)=
=-10×99=
=-990
c)-1+5×[(-4-2)×(-5)-17] -(18-10)×7=
=-1+5×[(-6×(-5)-17]-180×7=
=-1+5×(30-17)-1260=
=-1+5×13-1260=
=-1+65-1260=
=-1196
d){-3×[-7×(15-10-2)-3×(-8)+5]+20-4}×2=
=[-3×(-7×3+24+5)+16]×2=
=[-3×(-21+29)+16]×2=
=(-3×8+16)×2=
=(-24+16)×2=
=-8×2=
=-16