Which of the two signs should be interchanged in order to make the following equation correct?
21 + 5 × 2 – 21 ÷ 3 = 121
+ and -
2
– and ÷
3
– and ×
4
× and ÷
Which of the two signs should be interchanged in order to make the following equation correct?
21 + 5 × 2 – 21 ÷ 3 = 12