Which of the following interchanges of signs would make the given equation correct?
10 + 23 − 3 × 63 ÷ 7 = 70

The correct option is − and ×.

Given equation:
$10+23-3\times 63÷7=70$

We need to check which interchange of signs satisfies the equation. Let us interchange the signs − and × in the Left Hand Side (LHS) of the equation.

Substituting − with × and × with −, the LHS expression becomes:
$10+23\times 3-63÷7$

Using the BODMAS rule (Division, Multiplication, Addition, Subtraction):

Step 1: Division
$63÷7=9$
The expression becomes:
$10+23\times 3-9$

Step 2: Multiplication
$23\times 3=69$
The expression becomes:
$10+69-9$

Step 3: Addition
$10+69=79$
The expression becomes:
$79-9$

Step 4: Subtraction
$79-9=70$

Here, LHS = RHS = $70$.

Thus, interchanging − and × makes the equation correct.