Question
The following equation is incorrect. Which two signs should be interchanged to correct the equation?
1 ÷ 14 x 30 + 20 – 10 = 12
A. + and ÷
B. - and +
C. ÷ and x
D. x and -
Answer: A
Solution:
1 ÷ 14 x 30 + 20 – 10 = 12
=> 1 + 14 x 30 ÷ 20 – 10
=> 1 + 21 – 10
=> 22 – 10
=> 12
The Answer is + and ÷