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Question
Question 4 (b)
What should be subtracted from 2a + 8b + 10 to get -3a + 7b +16?
Question 4 (b)
What should be subtracted from 2a + 8b + 10 to get -3a + 7b +16?
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Solution
Let q be subtracted.
Then according to question,
2a+8b+10−q=−3a+7b+16 ⇒−q=−3a+7b+16−(2a+8b+10)
⇒−q=−3a+7b+16−2a−8b−10
⇒−q=−3a−2a+7b−8b+16−10⇒−q=−5a−b+6 ⇒q=−(−5a−b+6)⇒q=5a+b−6
Let q be subtracted.
Then according to question,
2a+8b+10−q=−3a+7b+16 ⇒−q=−3a+7b+16−(2a+8b+10)
⇒−q=−3a+7b+16−2a−8b−10
⇒−q=−3a−2a+7b−8b+16−10⇒−q=−5a−b+6 ⇒q=−(−5a−b+6)⇒q=5a+b−6
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