[tex] \frac{x}{3} [/tex] - 5 = -7 .
____________________________________________
This would be one way to write the expresion/equation; in which "x" represents the unknown number.
Now, to solve for "x" ;
____________________________________________
Given:
____________________________________________
[tex] \frac{x}{3} [/tex] - 5 = -7 ;
Add "5" to EACH SIDE of the equation:
_____________________________________________
[tex] \frac{x}{3} [/tex] - 5 + 5 = -7 + 5 ;
to get:
[tex] \frac{x}{3} [/tex] = -2 ;
x = (-2 * 3) ;
_________________________________
x = - 6 .
_________________________________
