Răspunsuri

2014-05-18T13:12:31+03:00
O carte egal 18 lei ,deci 5 ori 18 =90 lei 
2 5 2
2014-05-18T13:16:19+03:00
8 carti..............144lei
5 carti..............x lei
x=(144×5):8=
x=720:8=
x=90 lei


4 5 4