If '(+)' stand for the $\div$ , '($\div$)' stand for $\times$ , '($\times $)' stand for - and '(-)' stand for +, which one of the following is correct ?
Answer & explanation
Correct answer: option 4
18 + 6 / 7 × 5 − 2 = 18 ;
After interchanging signs;
18 \(\div \) 6 x 7 - 5 + 2 = 18
=> 3 x 7 - 5 + 2 = 18
=> 21 - 5 + 2 = 18
=> 16 + 2 = 18
=> 18 = 18
LHS = RHS