100-[48:(14-12:2)+56:7×8]

Răspuns :

100-[48÷(14-12÷2)+56÷7×8]=
=100-[48÷(14-6)+56÷7×8]
=100-(48÷8+56÷7×8)
=100-(6+8×8)
=100-(6+64)
=100-70
=30
14-6=8
48:8+64=80
100-80=20