Răspuns :
a+b=170=>a=170-b
a/2+b/3=70 amplificam =>3a+2b=420
3(170-b)+b=420
510-3b+b=420
b=510-420=>b=90
a=170-90=80
a/2+b/3=70 amplificam =>3a+2b=420
3(170-b)+b=420
510-3b+b=420
b=510-420=>b=90
a=170-90=80