Question

Ajutati-ma va rog!

Calculati:
a) 3-24:{48-9*[54-2:(75:5-28:2)*25]}
b) 126-4*{100-3*[45-(1320:11-400:4)]}

Answer 1

a) 3-24÷{48-9×[54-2÷(75÷5-28÷2)×25]}=
= 3-24÷{48-9×[54-2÷(15-14)×25]}
= 3-24÷[48-9×(54-2÷1×25)]
= 3-24÷[48-9×(54-2×25)]
= 3-24÷[48-9×(54-50)]
= 3-24÷(48-9×4)
= 3-24÷(48-36)
= 3-24÷12
= 3-2
= 1

b) 126-4×{100-3×[45-(1320÷11-400÷4)]}=
=126-4×{100-3×[45-(120-100)]}
=126-4×[100-3×(45-20)]
=126-4×(100-3×25)
=126-4×(100-75)
=126-4×25
=126-100
=26