Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation.

**(a)** 5m = 60 (10, 5, 12, 15)

12 is the solution for this equation because L.H.S=R.H.S for m=12.

For m = 10.

L.H.S R.H.S

For m = 5

L.H.S R.H.S

For m = 15

L.H.S R.H.S

**(b)** n + 12 = 20 (12, 8, 20, 0)

8 is the solution for this equation because L.H.S=R.H.S for n=8.

For n = 12

L.H.S R.H.S

For n = 20

L.H.S R.H.S

For n = 0

L.H.S R.H.S

**(c)** p – 5 = 5 (0, 10, 5 – 5)

p = 10 is the solution for this equation because for p = 10, L.H.S=R.H.S

For p = 0

L.H.S R.H.S

For p = 5

L.H.S R.H.S

For p = -5

L.H.S R.H.S

**(d)** (7, 2, 10, 14)

q = 14 is the solution for this equation because L.H.S = R.H.S for q=14.

For q=7

L.H.S R.H.S

For q=2

L.H.S R.H.S

For q=10

L.H.S R.H.S

**(e)** r – 4 = 0 (4, – 4, 8, 0)

r = 4 is the solution of this equation because L.H.S = R.H.S for r=4.

For r = -4

L.H.S R.H.S

For r = 8

L.H.S R.H.S

For r = 0

L.H.S R.H.S

**(f)** x + 4 = 2 (– 2, 0, 2, 4)

x = -2 is the solution of this equation because L.H.S = R.H.S for x = -2

For x = 0

L.H.S R.H.S

For x = 2

L.H.S R.H.S

For x = 4

L.H.S R.H.S