Which two signs should be interchanged to make the given equation correct?
8 + 9 ÷ 5 x 4 - 2 = 7
Answer & explanation
Correct answer: option 3
In the equation, 8 + 9 ÷ 5 x 4 - 2 = 7
if we interchange ÷ and - it becomes
8 + 9 - 5 x 4 ÷ 2 = 7
Using BODMAS rules,
LHS = 8 + 9 - 5 x 4 ÷ 2
= 8 + 9 - 5 x 2
= 8 + 9 - 10
= 7 = RHS
Thus the interchange makes the given equation correct.
8 + 9 - 5 x 4 ÷ 2
8 + 9 - 5 x 4 ÷ 2