What will come in place of the question mark (?)

We are asked to interchange the operators as follows:

• $+$ ↔ $-$

• $×$ ↔ $÷$

Original expression:

$12 \div 5 + 21 \times 3 - 2 = ? + 5$

Step 1: Interchange operators

• $12 \div 5 \to 12 \times 5$

• $+ \to -$

• $21 \times 3 \to 21 \div 3$

• $- \to +$

So the expression becomes:

$12 \times 5 - 21 \div 3 + 2 = ? + 5$

Step 2: Simplify left-hand side

1. $12 \times 5 = 60$

2. $21 \div 3 = 7$

So LHS:

$60 - 7 + 2 = 55$

Step 3: Solve for $?$

$55 = ? + 5$

$? = 55 - 5 = 50$

✅ Answer: 50