Question

Urgent îmi trebuie rezolvarile

Answer 1

1.{a,b} p.d {7,5}
a/7=b/5=k deci a=7k si b=5k
2k=12 deci k=6
a=42 si b=30
2.{a,b} p.i {2,3}
2a=3b=k deci a=k/2 si b=k/3
4a+b=28
4·k/2+k/3=28
6k/3+k/3=28
7k=28·3 deci k=4·3=12
a=6 si b=4