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If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:
- a)8a+2ab+2b+15
- b)8a+2ab+2b-15
- c)8a-2ab+2b-15
- d)8a-2ab-2b-15
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b &nda...
(12a – 9ab + 5b – 3) – (4a – 7ab + 3b + 12)
= 12a – 9ab + 5b – 3 – 4a + 7ab -3b-12
= (12 – 4)a – (9 – 7)ab + (5 – 3)b – 3 – 12
= 8a – 2ab + 2b – 15
= 12a – 9ab + 5b – 3 – 4a + 7ab -3b-12
= (12 – 4)a – (9 – 7)ab + (5 – 3)b – 3 – 12
= 8a – 2ab + 2b – 15
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If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b &nda...
Problem Statement
We need to subtract the expression (4a - 7ab + 3b + 12) from (12a - 9ab + 5b - 3).
Step-by-Step Solution
1. Write the expressions:
- Expression 1: 12a - 9ab + 5b - 3
- Expression 2: 4a - 7ab + 3b + 12
2. Set up the subtraction:
- (12a - 9ab + 5b - 3) - (4a - 7ab + 3b + 12)
3. Distribute the negative sign:
- This becomes:
- 12a - 9ab + 5b - 3 - 4a + 7ab - 3b - 12
4. Combine like terms:
- For 'a' terms:
- 12a - 4a = 8a
- For 'ab' terms:
- -9ab + 7ab = -2ab
- For 'b' terms:
- 5b - 3b = 2b
- For constant terms:
- -3 - 12 = -15
5. Final Expression:
- Combine all the simplified terms:
- 8a - 2ab + 2b - 15
Conclusion
The resulting expression after the subtraction is 8a - 2ab + 2b - 15, which corresponds to option 'C'.
We need to subtract the expression (4a - 7ab + 3b + 12) from (12a - 9ab + 5b - 3).
Step-by-Step Solution
1. Write the expressions:
- Expression 1: 12a - 9ab + 5b - 3
- Expression 2: 4a - 7ab + 3b + 12
2. Set up the subtraction:
- (12a - 9ab + 5b - 3) - (4a - 7ab + 3b + 12)
3. Distribute the negative sign:
- This becomes:
- 12a - 9ab + 5b - 3 - 4a + 7ab - 3b - 12
4. Combine like terms:
- For 'a' terms:
- 12a - 4a = 8a
- For 'ab' terms:
- -9ab + 7ab = -2ab
- For 'b' terms:
- 5b - 3b = 2b
- For constant terms:
- -3 - 12 = -15
5. Final Expression:
- Combine all the simplified terms:
- 8a - 2ab + 2b - 15
Conclusion
The resulting expression after the subtraction is 8a - 2ab + 2b - 15, which corresponds to option 'C'.
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Question Description
If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:a)8a+2ab+2b+15b)8a+2ab+2b-15c)8a-2ab+2b-15d)8a-2ab-2b-15Correct answer is option 'C'. Can you explain this answer? for Class 8 2026 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:a)8a+2ab+2b+15b)8a+2ab+2b-15c)8a-2ab+2b-15d)8a-2ab-2b-15Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:a)8a+2ab+2b+15b)8a+2ab+2b-15c)8a-2ab+2b-15d)8a-2ab-2b-15Correct answer is option 'C'. Can you explain this answer?.
If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:a)8a+2ab+2b+15b)8a+2ab+2b-15c)8a-2ab+2b-15d)8a-2ab-2b-15Correct answer is option 'C'. Can you explain this answer? for Class 8 2026 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:a)8a+2ab+2b+15b)8a+2ab+2b-15c)8a-2ab+2b-15d)8a-2ab-2b-15Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is:a)8a+2ab+2b+15b)8a+2ab+2b-15c)8a-2ab+2b-15d)8a-2ab-2b-15Correct answer is option 'C'. Can you explain this answer?.
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