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

Resposta: letra e

Explicação passo a passo:

x+y= 132 >> x=132-y

x/y=19/14

132-y/y=19/14

19y=1.848-14y

19y+14y=1.848

33y=1.848

y=1.848/33

y=56

x=132-y

x=132-56

x=76

=x-y

=76-56

=20