Răspuns :
x+y=298
x-19=y+19
x-y=19+19
x-y=38
x=38+y
38+y+y=298
2y=298-38
2y=260
y=130
x=130+38=168
x-19=y+19
x-y=19+19
x-y=38
x=38+y
38+y+y=298
2y=298-38
2y=260
y=130
x=130+38=168