Răspunsuri

2014-01-22T21:05:39+02:00

stofa 1=a; sofa 2=b

a=b; a-63=4(b-189)=>

a=4b-189+63=> a=4b-126

b=4b-126=> 3b=126=>b=42=a

Fiecare bucata avea initial 42m

1 1 1