Question

M=6(p+q) solve for q

Answer 1

Ok, so m=6(p+q), and solve for q, so it will be like this:
 m=6(p+q)
 m=6p+6q
-6p -6p
 m-6p=6q
 *1/6  *1/6
1/6m-p=q, or you can write it as q=1/6m-p.