If 2x + 5 = 15, what is the value of x?

If 2x + 5 = 15, what is the value of x?

• A. 2
• B. 5
• C. 10
• D. 15

Answer: (B)

To find the value of x in the equation 2x + 5 = 15, we can follow a series of algebraic steps. First, we need to isolate the term containing x. We can start by subtracting 5 from both sides of the equation: 2x + 5 - 5 = 15 - 5 This simplifies to: 2x = 10 Next, to solve for x, we divide both sides of the equation by 2: 2x / 2 = 10 / 2 This gives us: x = 5 Thus, the correct value of x is 5. This matches the provided answer and confirms its correctness. This approach to solving linear equations by first isolating the variable is a fundamental technique in algebra, reinforcing the understanding of equality and balance in equations.

To find the value of x in the equation 2x + 5 = 15, we can follow a series of algebraic steps.

First, we need to isolate the term containing x. We can start by subtracting 5 from both sides of the equation:

2x + 5 - 5 = 15 - 5

This simplifies to:

2x = 10

Next, to solve for x, we divide both sides of the equation by 2:

2x / 2 = 10 / 2

This gives us:

x = 5

Thus, the correct value of x is 5. This matches the provided answer and confirms its correctness. This approach to solving linear equations by first isolating the variable is a fundamental technique in algebra, reinforcing the understanding of equality and balance in equations.