Which two signs should be interchanged to make the given equation correct?
7 × 9 + 3 ÷ 7 - 3 = 25

​7 × 9 + 3 ÷ 7 - 3 = 25

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

Let's check options:

Option A: Interchange ÷ and ×

7 ÷ 9 + 3 × 7 - 3 = 25

0.778 + 3 × 7 - 3 = 25

0.778 + 21 - 3 = 25

21.778  - 3 = 25

18.778 $$\not=$$ 25​

Option B: Interchange ÷ and +

7 × 9 ÷ 3 + 7 - 3 = 25

​7 × 3 + 7 - 3 = 25

21 + 7 - 3 = 25

28 - 3 = 25

25 = 25 (Follow)

Thus, the correct option is: (b)