Răspuns :
a+b+c=2002
a=2b
a=c+150 =>c=a-150=2b-150
2b+b+2b-150=2002
5b=2002+150
5b=2152 =>b=430,4
a=860,8
c=860,8-150 =>c=710,8
a=2b
a=c+150 =>c=a-150=2b-150
2b+b+2b-150=2002
5b=2002+150
5b=2152 =>b=430,4
a=860,8
c=860,8-150 =>c=710,8
a+b+c = 2002
a = 2b = c+150 => c = 2b-150
2b+b+2b-150 = 2002
5b = 2002+150 <=> 5b = 2152
b = 2152:5 => b = 430,4
a = 860,8
c = 860,8-150 => c = 710,8
a+b+c = 860,8+430,4+710,8 = 2002 , corect.