Răspuns :
a + b = 2003
a = 3b + 27
3b + 27 + b = 2003
4b = 2003 - 27
b = 1976 : 4
b = 494
a = 2003 - 494
a = 1509
si
b = 3a + 27
a + 3a + 27 = 2003
4a = 1976
a = 494
b = 1509
a = 3b + 27
3b + 27 + b = 2003
4b = 2003 - 27
b = 1976 : 4
b = 494
a = 2003 - 494
a = 1509
si
b = 3a + 27
a + 3a + 27 = 2003
4a = 1976
a = 494
b = 1509
Notam:a=x ; b=3x+27
a+b=2003
x+3x+27=2003
4x=2003-27
4x=1976
x=1976:4
x=494
3x+27=3*494+27=1482
a=494
b=1482
a+b=2003
x+3x+27=2003
4x=2003-27
4x=1976
x=1976:4
x=494
3x+27=3*494+27=1482
a=494
b=1482