Răspuns :
Notam cu x nr initial
x-16/100x=434
100/100x-16/100x=434
84/100x=434
x=434×100/84
x=516.(6)
x-16/100x=434
100/100x-16/100x=434
84/100x=434
x=434×100/84
x=516.(6)
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)