Question

suma a 6 numere naturale impare consecutive ewte 120.Afla numerele

Answer 1

15+17+19+21+23+25=120(suma nr)

Answer 2

x+x+2+x+4+x+6+x+8+x+10=120
6x+30=120
6x=120-30
6x=90
x=90:6
x=15
x+2=17
x+4=19
x+6=21
x+8=23
x+10=25
15+17+19+21+23+25=32+19+21+23+25
=51+21+23+25
=72+23+25
=95+25
=120
Raspuns:15,17,19,21,23,25
Coroana??