Hey!
Let's write the problem,
[tex]\frac{H}{j}=15[/tex]
Multiply both sides by [tex]j[/tex] in order to undo the fraction.
[tex]\frac{H}{j}j=15j[/tex]
[tex]H=15j[/tex]
Let's switch sides so that we end up with [tex]j[/tex] on the left side.
[tex]15j=H[/tex]
Divide both sides by [tex]15[/tex].
[tex]\frac{15j}{15}=\frac{H}{15}[/tex]
Our final answer would be,
[tex]j=\frac{H}{15}[/tex]
Thanks!
-TetraFish
