3. Solve the following equations by trial and error method:
(i) 5p + 2 = 17 (ii) 3m – 14 = 4
(i) Put p = 1,
We have :
Put p = 2,
We have :
Put p = 3,
we have :
Thus the solution is p = 3.
(ii) Put m = 4,
we have :
Put m = 5,
we have :
Now, put m = 6,
we have :
Thus m = 6 is the solution.