Respuesta :

So,

[tex] \frac{x}{6} - \frac{x}{7} =ab[/tex]

Multiply both sides by the LCM of 6 and 7 (42).
[tex]7x - 6x=42ab[/tex]

Collect Like Terms.
x = 42ab
goku89
6x-x/7=6/7=.857 because 6x-x=6 and / by 7=.857