3 intregi 1/2 = 7/2
√0,0225=0,15=15/100=3/20
0,(6)=6/9=2/3
√1,125=√(1125)/1000=15√5/10√10=3√5/(2√5·√2)=3/2√2=3√2/4
0,2(7)=(27-2)/90=25/90=5/18
√0,09=0,3=3/10
7/2 · 3/20 - 2/3 · 3√2/4 · 2 + 5/18 · 3/10 =
21/40 - √2 + 1/12 =
Numitor comun
40=2³·5
12=2²·3
_______
c.m.m.m.c.=2³·3·5=120
(21·3-120√2+10)/120 =
(73-120√2)/120
