Question 750145
For literal equations we follow a kind of "reverse-PEMDAS" strategy: whatever was done to get an expression we undo.


{{{
 s= h/(m(v-u))
}}}



{{{
 s*m= (h/(m(v-u)))*m
}}}



{{{
 (s*m)/s= (h/(v-u))(1/s)
}}}


{{{
 m= h/(s(v-u))
}}}