Question

Suma a trei numere este 2007.Daca din fiecare se szcade acelasi numar se optin respectiv numerele:126,301,260.Care sunt numerele?

Answer 1

a+b+c=2007;
⇒a=x+126;
⇒b=x+301;
⇒c=x+260
⇒x+126+x+301+x+260=2007;
⇒3x=2007-[126+301+260]
⇒3x=2007-687
⇒3x=1320
⇒x=440;
⇒a=440+126
⇒a=566;
⇒b=440+301
⇒b=741;
⇒c=440+260
⇒c=700;

Answer 2

a+b+c=2007
a-x=126
b-x=301
c-x=260
3x+126+301+260=2007
3x+687=2007
3x=2007-687
3x=1320
x=1320:3
x=440
a-440=126
a=126+440
a=566
b-440=301
b=301+440
b=741
c-440=260
c=260+440
c=700