Chapter 1.1, Problem 29E

To determine

To solve the expression $9s=-54$ and verify the solution

Answer to Problem 29E

  $s=-6$

Explanation of Solution

Given:

  $9s=-54$

Calculation:

Now,

  $\Rightarrow 9s=-54$

  $\Rightarrow \frac{9s}{9}=\frac{-54}{9}$ (Dividing both sides by 9)

  $\Rightarrow s=-6$

Verification:

Now, substitute $s=-6$ in given expression.

  $\begin{array}{l}\Rightarrow 9s=-54\\ \Rightarrow 9\times -6=-54\\ \Rightarrow -54=-54\end{array}$

Here, Left Hand Side is equal to Right hand side.

So, the obtained solution is correct.

Conclusion:

Hence, the required solution is $s=-6$ .