Question

7 ex .va rog frumos am nevoie urgent

Answer 1

a) 3475-278×2+113×13=
=3475-556+1469=
=2919+1469=
=4388

b) 836×2+318×3-739×2
= 1672+954-1478
=2626-1478
=1148

c) 7+49×[7+7×(7+7+7)]-25-112=
=7+49×[7+7×(14+7)]-25-112=
=7+49×(7+7×21)-25-112=
=7+49×(7+147)-25-112=
=7+49×155-25-112=
=7+7595-25-112=
=7602-25-112
=7577-112
=7465

d) 8+64×[8+8×(8+8+8)-104-45=
=8+64×[8+8×(16+8)-104-45=
=8+64×(8+8×24)-104-45=
=8+64×(8+192)-104-45=
=8+64×200-104-45=
=8+12800-104-45=
=12808-104-45=
=12704-45=
=12029