If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then calculate the value of the following expression:
126×14+7−3÷2=?
- A-10
- B-12
- C-17
- D-41
Solution & Step-by-step Explanation
Let's substitute the operators according to the given instructions:
×→÷
+→−
−→×
÷→+
Replacing the signs in the expression:
126÷14−7×3+2
Now, evaluate using the standard BODMAS rule:
Division:
126÷14=9
The expression becomes: 9−7×3+2
Multiplication:
7×3=21
The expression becomes: 9−21+2
Addition and Subtraction:
9+2−21=11−21=−10
Hence, the answer is −10.
×→÷
+→−
−→×
÷→+
Replacing the signs in the expression:
126÷14−7×3+2
Now, evaluate using the standard BODMAS rule:
Division:
126÷14=9
The expression becomes: 9−7×3+2
Multiplication:
7×3=21
The expression becomes: 9−21+2
Addition and Subtraction:
9+2−21=11−21=−10
Hence, the answer is −10.