Question

2x:(x+7) =3:5 podrian ayudarme a resolver calculando el valor de x

Answer 1

2x/(x + 7) =3/5
2x = 3/5(x + 7)
2x = 3/5x + 21/5
2x - 3/5x = 21/5
(10x - 3x)/5 = 21/5
         7x/5  = 21/5
          7x    = 21/5 × 5
            x    = 21/7
            x =  3