Răspuns:
Explicație pas cu pas:
3/24+3/12+5/10= Nc = 2³ *3*5=120
(3*5 +3*10 +5*12) / 120 =
(15+30+60) /120=
105 /120 =
7/8
9/30+4/20-7/14=
(9*14 + 4*24 -7*30) /420 = nc= 2² *3*5*7=420
(126+96 - 210) / 420=
12/420=
1/35
succes
