Question

Determinati un numar ,stiind ca ,daca il adunam cu 5/12,obtinem 3/4

Answer 1

Răspuns:

$\it x+\dfrac{5}{12}=\dfrac{3}{4}\\\\\\\dfrac{12x + 5}{12}=\dfrac{3}{4}\\\\\\4\cdot(12x+5)=12\cdot3\\\\4\cdot12x+4\cdot5=36\\\\48x+20=36\\\\48x=36-20\\\\48x=16\\\\\\x=\dfrac{16}{48}\\\\\\\boxed{\it x=\dfrac{1}{3}}$