Question

Ex 2 3 4 urgent dau corana va rog

Answer 1

2)
a+b+c=614
b=2a
b=c-4 ⇒c=b+4 ⇒c=2a+4
a+2a+2a+4=614
5a=614-4=610
a=610:5
a=122
b=2x122
b=244
c=244+4
c=248
V: 122+244+248=614
3)
a+b+c=717
b=3a
b=c-17 ⇒c=b+17 ⇒c=3a+17
a+3a+3a+17=717
7a=717-17=700
a=700:7
a=100
b=3x100
b=300
c=300=17
c=317
V: 100+300+317=717
4)
2 bancnote de 50 lei = 100 lei
7 bancnote de 10 lei = 70
100+70=170 lei