If we interchange “+” with “–” and “÷” with “×”, then which of the below equations is correct?

​$$\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\ \hline \text{Addition} & + \\ \hline \text{Subtraction} & - \\\hline\end{array}$$​​

After changes: 15 ÷ 3 + 17 – 6 × 2 = 11

5 + 17 - 6 × 2 = 11

5 + 17 - 12 = 11

22 - 12 = 11

10 $$\not=$$ 11

After changes: 2 × 7 – 8 + 21 ÷ 3 = 14

2 × 7 – 8 + 7 = 14

14 + 7 - 8 = 14

21 - 8 = 14

13 $$\not=$$​ 14

After changes: 12 + 16 ÷ 2 – 5 × 4 = 1

12 + 8 – 5 × 4 = 1

12 + 8 – 20 = 1

20 - 20 = 1

0 $$\not=$$​ 1

After changes: 17 – 7 × 2 + 21 ÷ 3 = 10

17 – 7 × 2 + 7 = 10

17 – 14 + 7 = 10

3 + 7 = 10

Thus, the correct option is: (d)