Răspuns :
a,b-nr.
a+b=508
a=b:3
b:3+b=508 |×3
b+3b=1524
4b=1524
b=1524:4
b=381
a=b:3
a=381:3
a=127
a+b=508
a=b:3
b:3+b=508 |×3
b+3b=1524
4b=1524
b=1524:4
b=381
a=b:3
a=381:3
a=127
Fie a;b cele două numere
a+b=508
a=[tex]\dfrac{b}{3}[/tex]
[tex]\dfrac{b}{3}[/tex]+b=508
[tex]\dfrac{b+3b}{3}[/tex]=508
b+3b=508·3
4b=1524=>b=[tex]\dfrac{1524}{4}[/tex]=381
a+356=508=>a=508-381=127
a=127
b=381
Proba
127+381=508
a+b=508
a=[tex]\dfrac{b}{3}[/tex]
[tex]\dfrac{b}{3}[/tex]+b=508
[tex]\dfrac{b+3b}{3}[/tex]=508
b+3b=508·3
4b=1524=>b=[tex]\dfrac{1524}{4}[/tex]=381
a+356=508=>a=508-381=127
a=127
b=381
Proba
127+381=508