Question 3(a)
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.
5m = 60 ( 10, 5, 12, 15)
Given equation is 5m = 60.
Value of m Value of 5m(i) 10 5×10=50(ii) 5 5×5=25(iii) 12 5×12=60(iv) 15 5×15=75
Only case (iii) is satisfying the given equation.
∴ m=12 is the solution.