If \( x + 4 = 8 \), what is \( x \)?

If \( x + 4 = 8 \), what is \( x \)?

• A. 2
• B. 4
• C. 6
• D. 8

Answer: (B)

To solve the equation \( x + 4 = 8 \), the goal is to isolate the variable \( x \). This can be accomplished by performing operations that maintain the equality. Start with the original equation: \[ x + 4 = 8 \] Next, subtract 4 from both sides of the equation to isolate \( x \): \[ x + 4 - 4 = 8 - 4 \] This simplifies to: \[ x = 4 \] Thus, the value of \( x \) is confirmed to be 4. This solution aligns with the original equation, demonstrating that when 4 is added to \( x \), the result is indeed 8. This verifies the correctness of the solution.

To solve the equation ( x + 4 = 8 ), the goal is to isolate the variable ( x ). This can be accomplished by performing operations that maintain the equality.

Start with the original equation:

[ x + 4 = 8 ]

Next, subtract 4 from both sides of the equation to isolate ( x ):

[ x + 4 - 4 = 8 - 4 ]

This simplifies to:

[ x = 4 ]

Thus, the value of ( x ) is confirmed to be 4. This solution aligns with the original equation, demonstrating that when 4 is added to ( x ), the result is indeed 8. This verifies the correctness of the solution.