5. What is the solution of $$ 8 x-13=19 $$ ? $$ \begin{array}{ll}\text { A. } x=\frac{3}{4} & \text { B. } x=4 \ \text { C. } x=32 & \text { D. } x=40\end{array} $$

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To solve the equation $$ 8x - 13 = 19 $$, follow these steps:

1. **Add 13 to both sides** of the equation to isolate the term with $$ x $$:
   
   $$
   8x - 13 + 13 = 19 + 13
   $$
   
   Simplifies to:
   
   $$
   8x = 32
   $$

2. **Divide both sides by 8** to solve for $$ x $$:
   
   $$
   \frac{8x}{8} = \frac{32}{8}
   $$
   
   Simplifies to:
   
   $$
   x = 4
   $$

**Therefore, the correct answer is:**

**B. $$ x = 4 $$**
The solution is $$ x = 4 $$, choice B.

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