Respuestas

2013-05-14T01:33:36+02:00

X + ( X+1)+(X+2) = 63

X+X+X+1+2=63

3X+3=63

3X=63 - 3

3X = 60 

X = 60/3

x =20

2013-05-14T03:20:04+02:00

a + (a+1) + (a+2) = 63

3a + 3 = 63 

3a = 63 -3

3a = 60

a = 60/3

a = 20

 

los numeros son:

20,21,22