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Question

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+10q=3a+7b+16 q=3a+7b+16(2a+8b+10)
q=3a+7b+162a8b10
q=3a2a+7b8b+1610q=5ab+6 q=(5ab+6)q=5a+b6


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