`(128 div 16xx?-7xx2)/(762 -8xx6) =1`

Options

A. 103
B. 91
C. 99
D. 107

Answer

To solve the equation \((128 \div 16 \times ? - 7 \times 2)/(762 - 8 \times 6) = 1\), we will follow these steps:

### Step 1: Simplify the denominator
First, we will simplify the denominator \(762 - 8 \times 6\).

\[ 8 \times 6 = 48 \]
\[ 762 - 48 = 714 \]

### Step 2: Rewrite the equation
Now, we can rewrite the equation using the simplified denominator:

\[ \frac{128 \div 16 \times ? - 7 \times 2}{714} = 1 \]

### Step 3: Cross-multiply
Next, we will cross-multiply to eliminate the fraction:

\[ 128 \div 16 \times ? - 7 \times 2 = 714 \]

### Step 4: Calculate \(128 \div 16\)
Now, we calculate \(128 \div 16\):

\[ 128 \div 16 = 8 \]

### Step 5: Substitute back into the equation
Substituting this back into the equation gives us:

\[ 8 \times ? - 7 \times 2 = 714 \]

### Step 6: Calculate \(7 \times 2\)
Now, we calculate \(7 \times 2\):

\[ 7 \times 2 = 14 \]

### Step 7: Substitute and rearrange
Substituting this value back into the equation:

\[ 8 \times ? - 14 = 714 \]

Now, we can rearrange the equation to isolate \(8 \times ?\):

\[ 8 \times ? = 714 + 14 \]
\[ 8 \times ? = 728 \]

### Step 8: Solve for \(?\)
Finally, we divide both sides by 8 to solve for \(?\):

\[ ? = \frac{728}{8} \]
\[ ? = 91 \]

### Conclusion
Thus, the value of \(?\) is \(91\).