Răspuns :
4 plase = 10 kg -> 1 plasa =10\4 =5\2 =2,5
3 plase= 2,5x3=7,5
3 plase= 2,5x3=7,5
4plase=2plase+10kg
3 plase=?
4x=2+10
4x=12|:4
x=3+2+!0
x=15kg(3 plase)
3 plase=?
4x=2+10
4x=12|:4
x=3+2+!0
x=15kg(3 plase)