Question

Daca a/b=c/d, calculati 5- ad/bc

Answer 1

a/b=c/d
5-ad/bc=?

ad=bc
5-bc/bc=5-1=4

Answer 2

   
[tex]\displaystyle \\ \frac{a}{b} = \frac{c}{d} \\ \\ \texttt{Produsul mezilor = produsul extremilor.} \\ \Longrightarrow ~~ad = bc \\ \\ \Longrightarrow ~~ \frac{ad}{bc} = 1 \\ \\ \Longrightarrow ~~ 5 - \frac{ad}{bc} = 5-1 = \boxed{6}[/tex]