Which of the following interchanges of signs would make the given equation correct?
8 − 42 + 104 ÷ 13 × 4 = 18
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. - and +.
8 − 42 + 104 ÷ 13 × 4 = 18
After interchanging the signs:
8 + 42 - (104 ÷ 13) × 4 = 18
8 + 42 - (8 × 4) = 18
8 + 42 - 32 = 18
50 - 32 = 18
18 = 18