Răspuns :
x+y=558
x:y=4r3
x=4y+3
4y+3+y=558
5y=558-3
y=555:5
y=111
x+111=558
x=558-111
x=447
x:y=4r3
x=4y+3
4y+3+y=558
5y=558-3
y=555:5
y=111
x+111=558
x=558-111
x=447