Răspunsuri

2014-06-04T22:18:43+03:00
Fie x plasele.
4x-2x=10kg
4x-2x=2x
2x=10kg
x=10:2
x=5kg.
3 plase cântăresc x*3=5*3=15 kg
1 5 1
2014-06-04T22:51:45+03:00
4 plase ceapa.........2 plase + 10 kg => 2 plase ceapa = 10 kg
10 : 2 = 5 kg o plasa
3 x 5 = 15 kg cantaresc 3 plase