Expert Answers
lemjay eNotes educator| Certified Educator

`S=H/m(a-b)`

To get m only at one side of the equation, multiply both sides by m.

`S*m=H/m(a-b)*m`

 

`S*m=H(a-b)`

And then, divide both sides by S.

`(S*m)/S=(H(a-b))/S`

 

`m=(H(a-b))/S`


Hence,  `m=(H(a-b))/S` .