Q 3. - Precalculus Enhanced with Graphing Utilities

Question

Solve the equation : $2x+3=9$

Step-by-Step Solution

Answer

The solution of the equation is$x=3$

Step 1. Given information

Given equation is : $2x+3=9$

Step 2. Solution

$$\begin{gathered} 2x+3=9 \\ 2x=9-3 \\ 2x=6 \\ x=6/2 \\ x=3 \end{gathered}$$

Step 3. Check

Now, for $x=3$,

$$\begin{gathered} 2\left(3\right)+3 \\ =6+3 \\ =9 \end{gathered}$$