Final answer:
The equivalent equation for 11 - 7 × 115 is 11 - 805. After performing the multiplication (7 × 115 = 805) and then the subtraction (11 - 805), the result is -794.
Step-by-step explanation:
The equivalent equation for 11 - 7 × 115 is calculated by first performing the multiplication, and then the subtraction as per the order of operations (PEMDAS/BODMAS). So, 7 times 115 gives us 805. Subtracting 805 from 11 will give us the answer.
Therefore, the equation 11 - 7 × 115 simplifies to 11 - 805, which when calculated, equals -794.
The correct option matching our calculation is a. 11 - 805.
- Multiply 7 by 115 to get 805 (7 × 115 = 805).
- Subtract 805 from 11 to get the final answer (11 - 805 = -794).