Răspuns:
x:6=C₁ rest 2=>x-2=6C₁
x:7=C₂ rest 2=>x-2=7C₂
x:8=C₃ rest2=>x-2=8C₃
6=2·3
7=7
8=2³
cmmmc(6,7,8)=2³·7·3=168
x-2=168=>x=168+2=>x=170 cel mai mic nr. natural care indeplineste conditia data
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84:x=C rest 9=>Cx+9=84=>Cx=84-9=>Cx=75
136:x=C rest 11=>Cx+11=136=>Cx=136-11=>Cx=125
cmmdc(75,125)=5²=25
x=25 cel mai mare nr. natural care indeplineste conditia data