Răspuns :
a+b=63
a=2,5b
2,5b + b = 63
3,5b = 63
b = 63 : 3,5
b = 18
a=63-18 =>a=45
a=2,5b
2,5b + b = 63
3,5b = 63
b = 63 : 3,5
b = 18
a=63-18 =>a=45
a /______/ }
} =63
b /______/______/___/ }
a =63 : 3.5 =18
b =18*2.5 =45
} =63
b /______/______/___/ }
a =63 : 3.5 =18
b =18*2.5 =45