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Question
Add the following:
a − b + ab, b − c + bc, c − a + ac
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Solution
The given expressions are written in separate rows, with like terms one below the other, and then the addition of these expressions is as follows.
a – b + ab
+ b – c + bc
– a + c + ac
__________________
ab + bc + ac
Thus, the sum of the given expressions is ab + bc + ac.
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