a) 1/2; -1/5; 7/5; -9/8; -6/11; -1/4; -1/1;0,3=3/10 inversul este 10/3; 1/8
b) 0,75=75/100=3/4 inversul este 4/3
-1,5= -15/10= -3/2 inversul este -2/3
-12 inversul este -1/12
-0,4= -4/10= -2/5 inversul -5/2
0,(6)=6/9=2/3 inversul 3/2
0,8(3)=(83-8)/90=75/90=5/6 inversul 6/5
0,91(6)=(916-91)/900=825/900=33/36=11/12 inversul 12/11
-0,08(3)= (-83-8)/900= -91/900 inversul -900/91
5 inversul 1/5
-0,41(6)=(-416-41)/900= -457/900 inversul -900/457
0,58(3)=(583-58)/900=525/900=7/12 inversul 12/7
-0,3(8)=(-38-3)/90= -41/90 inversul -90/41
