The correct answer is 1 / 18.
Step-by-step explanation:
We are given the following equation for which we need to solve for the variable n:
![-\frac{7}{3n} =-42](/tpl/images/0473/7546/78d11.png)
So for solving this, we will rearrange the equation in a manner that isolates the variable n, making it the subject of the equation.
![-\frac{7}{3n} =-42](/tpl/images/0473/7546/78d11.png)
![-\frac{7}{42} =3n](/tpl/images/0473/7546/428e3.png)
![\frac{1}{6} =3n](/tpl/images/0473/7546/4a382.png)
![n=\frac{1}{6*3} \\\\n=\frac{1}{18}](/tpl/images/0473/7546/c7b3e.png)
Therefore, the value of n is equal to 1 / 18.