Question:
If \( x = 2y + 1 \) and \( y = 3 \), what is the value of \( x \)?
If \( x = 2y + 1 \) and \( y = 3 \), what is the value of \( x \)?
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When substituting values into an expression, it is a good practice to use parentheses, especially with negative numbers or more complex expressions, to avoid order of operations errors.
Updated On: Oct 4, 2025
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
This is a straightforward substitution problem. We are given an equation for \( x \) in terms of \( y \), and a specific value for \( y \). We need to substitute the value of \( y \) into the equation to find \( x \).
Step 2: Detailed Explanation:
The given equation is:
\[ x = 2y + 1 \] We are given the value of \( y \):
\[ y = 3 \] Substitute \( y = 3 \) into the equation for \( x \):
\[ x = 2(3) + 1 \] Now, perform the multiplication:
\[ x = 6 + 1 \] Finally, perform the addition:
\[ x = 7 \] Step 3: Final Answer:
The value of \( x \) is 7.
This is a straightforward substitution problem. We are given an equation for \( x \) in terms of \( y \), and a specific value for \( y \). We need to substitute the value of \( y \) into the equation to find \( x \).
Step 2: Detailed Explanation:
The given equation is:
\[ x = 2y + 1 \] We are given the value of \( y \):
\[ y = 3 \] Substitute \( y = 3 \) into the equation for \( x \):
\[ x = 2(3) + 1 \] Now, perform the multiplication:
\[ x = 6 + 1 \] Finally, perform the addition:
\[ x = 7 \] Step 3: Final Answer:
The value of \( x \) is 7.
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