a) 2. 5+ 2.1(razy) 4.1 =
_ _ _
9 3 3
b) 5.1 (razy) 1.4 - 6: 4.2=
_ _ _
7 9 3
c)
3. 1 (razy)(2.1 - 1.1: 6)=
_ _ _
2 4 2

d)
5.2- 1.1
_ _
9 6
__________________ =
3.2 (razy) (1.1-1)
_ _ _
3 4 2