Question

Question 3(c)

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.

p - 5 = 5 (0, 10, 5, -5)

Answer 1

Given equation is p - 5 = 5

$\begin{array}{cc}Valueofp& Valueof(p-5)\\ & \\ \left(i\right)0& 0-5=-5\\ & \\ \left(ii\right)10& 10-5=5\\ & \\ \left(iii\right)5& 5-5=0\\ & \\ \left(iv\right)-5& -5-5=-10\\ & \end{array}$

Only case (ii) is satisfying the given equation.

$\therefore$ p=10 is the solution.