The two expressions on either side of the equal sign will have the same value if two numbers on the left-hand side are interchanged and two signs on the right-hand side are interchanged.
What are those two numbers (not digits) and the two signs?
9 × 1 ÷ 3 + 8 – 7 = 12 ÷ 3 + 2 × 33 – 13
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 1 and 3; + and ×
9 × 1 ÷ 3 + 8 – 7 = 12 ÷ 3 + 2 × 33 – 13
After interchanging 1 and 3; + and ×, we get 9 × 3 ÷ 1 + 8 – 7 = 12 ÷ 3 × 2 + 33 – 13
Taking L.H. S.
= 9 × (3 ÷ 1) + 8 – 7
= (9 × 3) + 8 - 7
= (27 + 8) - 7
= 28
Taking R.H. S.
= (12 ÷ 3) × 2 + 33 – 13
= (4 × 2) + 33 – 13
= (8 + 33) – 13
= 41 - 13
= 28
So, L.H.S. = R.H.S.