- ((a))
69
- ((b))
71
- ((c))
73
- ((d))
75
Show Answer
69

Shortcut Trick
Solve the expression using the BODMAS rule: Brackets, Orders, Division, Multiplication, Addition, Subtraction.
Bracket: (31 + 25) = 56
Multiplication: 56 × 2 = 112
Group addition: 58 + 79 + 61 = 198
Group subtraction: −112 − 17 = −129
Result: 198 − 129 = 69
∴ The correct answer is 69.

Alternate Method
Given: 58 + 79 − (31 + 25) × 2 + 61 − 17
Method: BODMAS Rule (Brackets first, then Multiplication, then Addition/Subtraction)
⇒ 58 + 79 − (56) × 2 + 61 − 17
⇒ 58 + 79 − 112 + 61 − 17
⇒ (58 + 79 + 61) − 112 − 17
⇒ 198 − 112 − 17
⇒ 86 − 17
⇒ 69
∴ The correct answer is 69.

Additional Information
BODMAS Rule
It defines the order of operations: Brackets (), Of/Orders, Division (÷), Multiplication (×), Addition (+), and Subtraction (−).
Types of Brackets
Standard order of solving brackets is Parenthesis (), then Braces {}, and finally Square Brackets [].
Calculation Shortcuts
Combine all positive numbers and all negative numbers separately before the final subtraction to reduce errors.






































































