Question

dau coroană.......urgent.......va rog...

Answer 1

1)
3/4 : (3/4 - 1/2) - 4/9
=3/4 : 1/4 - 4/9
=3 - 4/9
=23/9

2)
b+f=30
b=4/5 * 30 = 24 => f=6

3)
atlas = 200
200 + 10/100 * 200 = 200 + 20 = 220 (noul pret)