Q56 - Algebra 1

Question

Solve each equation.

$a=24-7\left(3\right)$

Step-by-Step Solution

Answer

The value of the $a$ is $3$.

Step 1. Given information.

We have an equation $a=24-7\left(3\right)$

To find the value of $a$

Step 2. PEMDAS Rule.

• In the presence of grouping symbols such as parenthesis or bracket, simplify expressions in those first, beginning with the innermost grouping symbol.
• In the expression, evaluate exponential expressions or absolute values in order from left to right.
• Multiply or divide in order from left to right.
• Add or subtract in order from left to right. 

If there are no grouping symbols or no exponents, we multiply or divide and then add or subtract in the order from left to right.

Step 3. Calculation.

We have,

$a=24-7\left(3\right)$         

$$\begin{gathered} \Rightarrow a=24-7·3 \\ \Rightarrow a=24-21 \\ \Rightarrow a=3 \end{gathered}$$     

Hence, the value of the $a$ is $3$.