Răspunsuri

2014-05-24T11:56:43+03:00
A+b=24⇒a=24-b
a-3=b/5
24-b-3=b/5
21=b+b/5
105=5b+b
105=6b
b=105/6
b=17,5
a=24-b
a=24-17,5
a=6,5

verificare
17,5+6,5=24
24=24

6,5-3=17,5/5
3,5=3,5