1,8(6)=(186-18)/90=168/90=28/15
0,1(6)=(16-1)/90=15/90=1/6
0,(6)=6/9=2/3
1,1(6)=(116-11)/90=105/90=7/6
1,25=125/100=5/4
0,25=25/100=1/4
a=[28/15-1/6+2/3]:7/6+5/4:1/4 amplificam pe 28/15 cu 2, pe 1/6 cu 5 si pe 2/3 cu 10
a=[56/30-5/30+20/30]x6/7+5/4x4
a=71/30x6/7+5
a=71/35+5 amplificam pe 5 cu 35
a=71/35+175/35
a=246/35
