Respuestas

2012-04-21T02:21:10+02:00

x/7 + 2x/3 = 51

\frac{3x + 14x}{21} = 51

17x = 51(21)

 

x = 3(21)

 

x= 63 

 

2012-04-21T02:38:07+02:00

   x  +  2x   = 51

   7     3

 

  3x+14x = 51

      21

 

   17x=1071

      x= 63