Which two signs need to be interchanged to make the following equation correct?
56÷28−72+18×6=60
- A− and +
- B÷ and +
- C÷ and −
- D+ and ×
Solution & Step-by-step Explanation
Let's check Option A (interchanging − and +):
The equation becomes:
56÷28+72−18×6=60
Applying BODMAS rule:
Division: 56÷28=2
Gauth
Multiplication: 18×6=108
Substitute back into the equation:
2+72−108=74−108=−34
=60
Let's check Option B (interchanging ÷ and +):
The equation becomes:
56+28−72÷18×6=60
Applying BODMAS rule:
Division: 72÷18=4
Filo
Multiplication: 4×6=24
Addition and Subtraction:
56+28−24=84−24=60
Since 60=60, interchanging ÷ and + makes the equation correct.
The equation becomes:
56÷28+72−18×6=60
Applying BODMAS rule:
Division: 56÷28=2
Gauth
Multiplication: 18×6=108
Substitute back into the equation:
2+72−108=74−108=−34
=60
Let's check Option B (interchanging ÷ and +):
The equation becomes:
56+28−72÷18×6=60
Applying BODMAS rule:
Division: 72÷18=4
Filo
Multiplication: 4×6=24
Addition and Subtraction:
56+28−24=84−24=60
Since 60=60, interchanging ÷ and + makes the equation correct.