Question

Check whether the value given in the brackets is a solution to the given equation or not $7n+5=19(n=-2)$

Answer 1

Checking if $(n=-2)$ is the solution of $7n+5=19$or not:

We know that if the given value of the variable $(n=-2)$ satisfies the given equation $7n+5=19$then that value will be the solution of the equation.

Step1:Putting the value of $(n=-2)$in the given equation $7n+5=19$:

$$\begin{gathered} L.H.S \\ \Rightarrow 7\times (-2)+5=-14+5 \\ \Rightarrow 7\times (-2)=-9 \end{gathered}$$

$$\begin{gathered} R.H.S \\ 19 \end{gathered}$$

Step2: Comparing Both sides:

We can see that $L.H.S\ne R.H.S$

Hence, $(n=-2)$ is not the solution of $7n+5=19$.