Resposta:
c) x=12 e y=8
Explicação passo a passo:
[tex]y/(16+y)=6/(6+x)=4/12\\\\\\y/(16+y)=4/12 \\12y=64+4y\\8y=64\\y=8\\\\6/(6+x)=4/12\\72=24+4x\\4x=48\\x=12[/tex]
