Class 7 Exam > Class 7 Questions > (- 10) x (- 5) + (- 7) is equal to:a)-57b)57c...
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(- 10) x (- 5) + (- 7) is equal to:
- a)-57
- b)57
- c)-43
- d)43
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
(- 10) x (- 5) + (- 7) is equal to:a)-57b)57c)-43d)43Correct answer is...
To solve the given expression (-10) x (-5) - 7, we can follow the order of operations, which states that we should first perform any calculations inside parentheses, then any exponentiation, followed by multiplication and division from left to right, and finally addition and subtraction from left to right.
Steps to solve the expression:
1. Perform the multiplication: (-10) x (-5) = 50.
2. Subtract 7 from the result: 50 - 7 = 43.
So, the final answer is 43, which corresponds to option D.
Explanation:
Multiplying two negative numbers results in a positive number. In this case, (-10) x (-5) equals 50. The negative sign in front of the 7 is separate and does not affect the multiplication. Subtracting 7 from 50 gives us 43.
It is important to note that the order of operations is crucial in solving mathematical expressions. Following the correct order ensures that the calculations are performed accurately. In this case, the multiplication is performed before the subtraction, resulting in the final answer of 43.
Therefore, the correct answer is option D, 43.
Steps to solve the expression:
1. Perform the multiplication: (-10) x (-5) = 50.
2. Subtract 7 from the result: 50 - 7 = 43.
So, the final answer is 43, which corresponds to option D.
Explanation:
Multiplying two negative numbers results in a positive number. In this case, (-10) x (-5) equals 50. The negative sign in front of the 7 is separate and does not affect the multiplication. Subtracting 7 from 50 gives us 43.
It is important to note that the order of operations is crucial in solving mathematical expressions. Following the correct order ensures that the calculations are performed accurately. In this case, the multiplication is performed before the subtraction, resulting in the final answer of 43.
Therefore, the correct answer is option D, 43.
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(- 10) x (- 5) + (- 7) is equal to:a)-57b)57c)-43d)43Correct answer is option 'D'. Can you explain this answer?
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