Chapter 1.1, Problem 12E

To determine

To solve the equation:

$0=4+q$

And also check the solution.

Answer to Problem 12E

$p=-3$

Explanation of Solution

Given:

$0=4+q$

Concept Used:

• Steps to solve a linear equation:
1. Use distributive property to remove any grouping symbol.
2. Simplify the expression in each side of the equation.
3. Collect the variable terms on one side of the equation and the constant on the other side.
4. Isolate the variable
• To check the solution of a equation substitute the solution in the equation and check whether it satisfies.

Calculation:

In order to solve the equation:

$0=4+q$

First, rewrite the equation as:

$\begin{array}{c}0=4+q\\ \Rightarrow 4+q=0\end{array}$

Now, isolate the variable by subtract 4 from both sides, as

$\begin{array}{c}4+q=0\\ \Rightarrow 4+q-4=0-4\\ \Rightarrow q+0=-4\\ \Rightarrow q=-4\end{array}$

Thus, solution of given equation is $q=-4$ .

Now, to check this solution put $q=-4$ in right hand side of the given equation, and check whether both sides are equal.

Right hand side:

$\begin{array}{c}4+\left(-4\right)=4-4\\ =0\\ =\text{Left hand side}\end{array}$

Thus, $p=-3$ is correct solution for given equation.