Question

If 3x + 7 = 19, what is x?

• A. 4
• B. 3
• C. 2
• D. 1

Hint:

After finding your solution, you can quickly check it by substituting the value back into the original equation. For \(x=4\), \(3(4) + 7 = 12 + 7 = 19\). This confirms the answer is correct.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This is a linear equation that can be solved for the variable \(x\) using basic algebraic operations.
Step 2: Detailed Explanation:
Given the equation:
\[ 3x + 7 = 19 \] Subtract 7 from both sides to isolate the term with \(x\):
\[ 3x = 19 - 7 \] \[ 3x = 12 \] Divide both sides by 3 to solve for \(x\):
\[ x = \frac{12}{3} \] \[ x = 4 \] Step 3: Final Answer:
The value of \(x\) is 4. This corresponds to option (A).