Question

Efectuati:
b)[434:14-(5608:8+924:33):27]:2-1
c)71+5x[100-2x(306:9+6)]+54:6x21
d)[520:10-7x(3=18:9)]x5+6x(15x12-15-10):15

Answer 1

b)[434:14-(5608:8+924:33):27]:2-1=
=[31-(701+28):27]:2-1=
=[31-729:27]:2-1=
=(31-27):2-1=
=4:2-1=
=2-1=1

c)71+5x[100-2x(306:9+6)]+54:6x21=
=71+5x[100-2x(34+6)]+8x21=
=239+5x(100-2x40)=
=239+5x20+168=
=239+100+168=
=507

d)[520:10-7x(3+18:9)]x5+6x(15x12-15-10):15 =
=[52-7x(3+2)]x5+6x(180-25):15 =
=(52-7x5)x5+(6x155):15 =
=(52-35)x5+930:15 =
=14x5+62 =
=70+62=132