Răspuns :
cate masini a spalat in 4 ore?
26-6=20
cate masini a spalat intr-o ora?
4ore........20masini
1ora...........x
-------------------
x=20 x1:4=5 masini
26-6=20
cate masini a spalat intr-o ora?
4ore........20masini
1ora...........x
-------------------
x=20 x1:4=5 masini