Răspunsuri

2014-10-14T18:34:28+03:00
A)Fie x primul numar x+2 al doilea numar x+4 al treilea numar
obtinem ecuatia
x+x+2+x+4=222
3x=222-6
3x=216
x=72
x+2=74
x+4=76

b)Notam 1 numar x+1 al 2 numar x+3 al 3 numar x+5 al 4 numar x+7 al 5 numar x+9 al 6 numar x+11
obtinem ecuatia x+1+x+3+x+5+x+7+x+9+x+11=120
6x=120-36
6x=84
x=14
x+1=15
x+3=17
x+5=19
x+7=21
x+9=23
x+11=25
2 5 2