Răspuns :
[tex] \frac{x}{7} [/tex] = [tex] \frac{10}{14} [/tex]
x · 14 = 10 ·7
x ·14 = 70
x = 5
x · 14 = 10 ·7
x ·14 = 70
x = 5
[tex] \frac{x}{7} = \frac{10}{14} \\ x*14=7*10 \\ 14x=70 \\ x= \frac{70}{14} \\ x=5[/tex]