Which two numbers, from among the given options, should be interchanged to make the given equation correct?
(36 ÷ 4) × 12 + (7 × 6) – 18 + (3 × 9) = 63
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 4 and 12.
Given equation: (36 ÷ 4) × 12 + (7 × 6) – 18 + (3 × 9) = 63
Option 3: 4 and 12
After interchanging the expression becomes:
(36 ÷ 12) × 4 + (7 × 6) – 18 + (3 × 9) = 63
3 × 4 + 42 – 18 + 27 = 63
12 + 42 – 18 + 27 =63
54 - 18 + 27 =63
63 = 63