Which two signs need to be interchanged to make the following equation correct?
31+69÷23×5−83=99
- A÷ and ×
- B− and ×
- C+ and ×
- D− and +
Solution & Step-by-step Explanation
Let's test the given options to find which swap balances the equation:
Let's test Option D (interchanging − and +):
The equation becomes:
31−69÷23×5+83
Applying BODMAS rule:
Division: 69÷23=3
Multiplication: 3×5=15
Substitution: 31−15+83
Addition & Subtraction: 31−15=16⟹16+83=99
Since 99=99, Option D satisfies the equation perfectly.
Let's test Option D (interchanging − and +):
The equation becomes:
31−69÷23×5+83
Applying BODMAS rule:
Division: 69÷23=3
Multiplication: 3×5=15
Substitution: 31−15+83
Addition & Subtraction: 31−15=16⟹16+83=99
Since 99=99, Option D satisfies the equation perfectly.