Question

obter os valores de A e B na proporçao a/b=5/4 sabendo q a-b=12

Answer 1

a/b = 5/4
a = 12+b
portanto: 12+b/b = 5/4 --> 5b = 48+4b --> b = 48
Qual o valor de "a": a = 12 + 48 --> a = 60
Resposta = 60/12

Answer 2

a/b=5/4 e a-b=12.
a=12+b.
a/b=>12+b/b=5/4=>4.(12+b)=5b.
48+4b=5b=>b=48.
a=12+b=>a=12+48=>a=60