Question

a)244:4+211-[900-(3×14+7)×9]:3+15×17=?
b)[(571;5-486:5-1):8×249]:6-29+606&6=?
c) (124×3-90:3)×(25×6-15×2×5)+4×129-399=?
(In forma de exercițiu)
Repede!!!!

Answer 1

a)244:4+211-[900-(3×14+7)×9]:3+15×17=
=244:5+211-[900-(42+7)×9]:3+15×17=
=244:5+211-(900-49×9):3+15×17=
=244:5+211-(900-441):3+15×17=
=244:5+211-459:3+15×17=
=48.8+211-153+255=
=361.8 (poti scrie si tu asa pentru ca aceste calcule sunt simple si probabil nu iti va spune nimic profesoara)

b)[(571:5-486:5-1):8×249]:6-29+606:6=
=[(114.2-97.2-1):8×249]:6-29+606:6=
=(16:8×249):6-29+606:6=
=(2×249):6-29+606:6=
=498:6-29+606÷6=
=83-29+101=
=54+101=
=155

c)(124×3-90÷3)×(25×6-15×2×5)+4×129-399=
=(372-30)×(150-150)+4×129-399=
=342×0+4×129-399=
=0+516-399=
=117