Răspuns:
b)
7/5 - 4/9 • 1/2 =
7/5 - 4/18 =
(18•7-4•5)/90 =
(126-20)/90 =
106/90 =
53/45 =
1,1(7)
e)
4 : 1,7424 =
4 • 10000/17424 =
10000/4356 =
5000/2678 =
2500/1339 =
1,867...
b)
5 - 3/4 =
(20-3)/4 =
17/4 =
4,25
e)
3/4 - 4/25 =
(75-16)/100 =
59/100 =
0,59