Question

daca fractiile x+3pe5 si 19pe25 sunt echivalente, atunci x=

Answer 1

$\it \dfrac{x+3}{5} = \dfrac{19}{25} |_{\cdot5} \Rightarrow x+3 = \dfrac{19}{5} \Rightarrow x = \dfrac{19}{5} -3 \Rightarrow x = \dfrac{4}{5}$

Answer 2

(x + 3)/5 = 19/25

25(x + 3) = 5·19

25x + 75 = 95

25x = 20

x =20/25

x = 4/5