Resposta:
[tex] \frac{x}{3} = \frac{10}{6} [/tex]
x . 6 = 3 . 10
6x = 30
x = 30/6
x = 5
[tex] \frac{x}{4} = \frac{91}{52} [/tex]
x . 52 = 91 . 4
52x = 364
x = 364/52
x = 7
