MAKING THE SUBJECT 1

If M = y(w + a)    make a the subject of the formula.

            (w – a)

Solution

M = y(w + a)   

         (w – a)

(w – a) x M = y(w + a) x (w – a)   multiply by(w-a) on both sides.

                         (w – a)

(w – a) x M = y(w + a) open the brackets on both sides.

Mw – Ma = yw + ya

Mw – wb = Ma + ya   (collect the terms containing a together)

Mw – yw = a(M + y)

Mw – yw = a(M + y) ¹               Divide by (M + y) on both sides.

(M + y)         (M + y) ₁

Mw – yw = a

(M + y)        

Hence  a =   Mw – yw

                     M + y       

TRY THIS…………

If B = r(h + c)    make h the subject of the formula.

            (h – c)