Question

E) x sobre 7 = 2(x+3) sobre 6

Answer 1

x/7 = 2 (x + 3)/6

x/7 = (2x + 6)/6

x * 6 = 7 (2x + 6)

6x = 14x + 42

6x - 14x = 42

- 8x = 42

x = 42/-8---simplificamos la mitad 

x = - 21/4

Solución : 

x = - 21/4