(5/6+25/100)×1/6×25/100=(5/6+1/4)×1/6×1/4=
aducând la același numitor 12
(10+3)/12×1/6×1/4=
13/12×1/6×1/4=
13/288
1/6+7/9×3/17+(86-8)/90=
1/6+7/51+78/90=
1/6+7/51+12/15=
1/6+7/51+4/5=
6=2×3
51=3×17
5=5
cmmmc 2×3×17×5
(17×5+10+6×17)/510=
(85+10+102)/510=
197/510
