Question

suma a 5 numere pare consecutive este 502.Afla numerele?
dau coroana si 10 puncte

Answer 1

avem a+b+c+d+e=520
b=a+2
c=a+4
d=a+6
e=a+8
inlocuim si vom avea
a+a+2+a+4+a+6+a+8=520
5a+20=520
5a=520-20
5a=500
a=500:5
a=100
b=a+2=100+2=102
c=a+4=100+4=104
d=a+6=100+6=106
e=a+8=100+8=108
100+102+104+106+108=520