Răspunsuri

2014-05-17T10:13:42+03:00
Notam cu x nr initial
x-16/100x=434
100/100x-16/100x=434
84/100x=434
x=434×100/84
x=516.(6)
2014-05-17T10:18:52+03:00
Notam cu x=numarul       x-16/100x=434  aducem la acelasi numitor    16/100=4/25             x-4/25x=434     25x-4x=10.850     21x=10850    x=10850/21   x=516,(6)