If '-' means `'xx'`, '+' means `'div','xx'` means '+' and `'div'` means '-', then :
`4-3div8xx6+4=?`

Options

A. `-3(1)/(2)`
B. `-4(3)/(4)`
C. `5(1)/(2)`
D. 6

Answer

To solve the expression \( 4 - 3 \div 8 \times 6 + 4 \) using the given meanings of the symbols, we will follow these steps:

### Step 1: Replace the symbols
According to the problem:
- \( - \) means \( \times \)
- \( + \) means \( \div \)
- \( \times \) means \( + \)
- \( \div \) means \( - \)

So, we will replace each symbol in the expression \( 4 - 3 \div 8 \times 6 + 4 \):
- \( 4 - 3 \) becomes \( 4 \times 3 \)
- \( 3 \div 8 \) becomes \( 3 - 8 \)
- \( 8 \times 6 \) becomes \( 8 + 6 \)
- \( 6 + 4 \) becomes \( 6 \div 4 \)

Thus, the expression becomes:
\[ 4 \times 3 - 8 + 6 \div 4 \]

### Step 2: Rewrite the expression
Now we rewrite the expression with the new meanings:
\[ 4 \times 3 - 8 + 6 \div 4 \]

### Step 3: Apply BODMAS/BIDMAS rules
According to BODMAS/BIDMAS, we first perform division and multiplication from left to right:
1. Calculate \( 4 \times 3 \):
\[ 4 \times 3 = 12 \]
2. Calculate \( 6 \div 4 \):
\[ 6 \div 4 = 1.5 \]

Now the expression looks like:
\[ 12 - 8 + 1.5 \]

### Step 4: Perform subtraction and addition
Now we perform the operations from left to right:
1. Calculate \( 12 - 8 \):
\[ 12 - 8 = 4 \]
2. Now add \( 1.5 \):
\[ 4 + 1.5 = 5.5 \]

### Final Answer
Thus, the final answer is:
\[ 5.5 \] or \( 5 \frac{1}{2} \)

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