Question

x/y=19/14 determine x-y sabendo que x+y=132
a)5
b)10
c)20
d)30
e)40
​

Answer 1

$> resolucao \\ \\ \\ x + y = 132 > > x = 132 - y \\ \\ \frac{x}{y} = \frac{19}{14} \\ \\ \\ \frac{132 - y}{y} = \frac{19}{14} \\ \\ 19y = 1848 - 14y \\ 19y + 14y = 1848 \\ 33y = 1848 \\ y = \frac{1848}{33} \\ y = 56 \\ \\ \\ x = 132 - y \\ x = 132 - 56 \\ x = 76 \\ \\ \\ \\ = x - y \\ = 76 - 56 \\ = 20 \\ \\ \\ \\ resposta \: > \: (c) \\ \\ \\ = = = = = = = = = = = = =$