Question

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

$5m=60$ on $(10,5,12,15)$

Answer 1

Finding the solution of an equation

The given equation is $5m=60$

Now, putting different values from $(10,5,12,15)$ in the equation,

At $m=10$

$$\begin{gathered} LHS\to 5m=5\times 10 \\ =50\ne RHS \end{gathered}$$

At $m=5$

$$\begin{gathered} LHS\to 5m=5\times 5 \\ =25\ne RHS \end{gathered}$$

At $m=12$

$$\begin{gathered} LHS\to 5m=5\times 12 \\ =60=RHS \end{gathered}$$

At $m=15$

$$\begin{gathered} LHS\to 5m=5\times 15 \\ =75\ne RHS \end{gathered}$$

Hence, $m=12$ is the solution of the equation.