If `x=14-y`, what is 3x when y=11?

Options

A. `-9`
B. `-3`
C. `3`
D. `9`

Answer

To solve the problem step by step, we will follow the given equation and substitute the value of \( y \) to find \( 3x \).

### Step 1: Write down the equation for \( x \)
We are given the equation:
\[ x = 14 - y \]

### Step 2: Substitute the value of \( y \)
We need to find \( 3x \) when \( y = 11 \). First, we substitute \( y \) into the equation for \( x \):
\[ x = 14 - 11 \]

### Step 3: Calculate \( x \)
Now, we perform the calculation:
\[ x = 14 - 11 = 3 \]

### Step 4: Calculate \( 3x \)
Next, we need to find \( 3x \):
\[ 3x = 3 \times 3 \]

### Step 5: Final calculation
Now, we perform the multiplication:
\[ 3x = 9 \]

Thus, when \( y = 11 \), \( 3x \) is equal to \( 9 \).

### Final Answer
\[ 3x = 9 \]

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