MAKING THE SUBJECT 1

If M = u(b + s)    make s the subject of the formula.

             (b – s)

Solution

M = u(b + s)   

          (b – s)

(b – s) x M = u(b + s) x (b – s) 1 multiply by(b-S) on both sides.

                         (b – s) 1

(b – s) x M = u(b + s) open the brackets on both sides.

Mb – Ms = ub + us

Mb – ub = Ms + us   (collect the terms containing s together)

Mb – ub = s(M + u)

Mb – ub = s(M + u) ¹               Divide by (M + u) on both sides.

(M + u)         (M + u) ₁

Mb – ub = s

(M + u)        

Hence  s =   Mb – ub

                      (M + u)   

   TRY THIS………………….

 If M = u(a + e)    make e the subject of the formula.

               (a – e)