If the mathematical operator, `'xx` mean '+' means '`xx"', +` means '-' and '-' then `22+36-12xx6+4=?`

Options

A. `21`
B. 43
C. 68
D. 53

Answer

To solve the expression `22 + 36 - 12 xx 6 + 4` using the given mathematical operators, we first need to replace the operators according to the definitions provided:

1. **Replace the operators:**
- `+` means `-`
- `-` means `÷`
- `xx` means `+`

Thus, we can rewrite the expression as:
- `22 - 36 ÷ 12 + 6 - 4`

2. **Now, replace the operators in the expression:**
- `22 - 36 ÷ 12 + 6 - 4`
- becomes `22 - 36 ÷ 12 + 6 - 4`

3. **Now we will perform the operations according to the order of operations (BODMAS/BIDMAS):**
- First, we handle the division:
- `36 ÷ 12 = 3`
- So the expression now becomes:
- `22 - 3 + 6 - 4`

4. **Next, we perform the subtraction and addition from left to right:**
- First, calculate `22 - 3`:
- `22 - 3 = 19`
- Now the expression is:
- `19 + 6 - 4`
- Next, calculate `19 + 6`:
- `19 + 6 = 25`
- Now the expression is:
- `25 - 4`
- Finally, calculate `25 - 4`:
- `25 - 4 = 21`

5. **Final Result:**
- The final answer is `21`.

### Summary of Steps:
1. Rewrite the expression with the new operators.
2. Perform the division first.
3. Follow with subtraction and addition from left to right.
4. Arrive at the final answer.