add the following
(a)a - b + ab
(b)b - c + bc
(c)c - a + ca
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Answer:
(a) a-c +ab
Step-by-step explanation:
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Answered by
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Step-by-step explanation:
(a - b + ab) + (b - c + bc) + (c - a + ca)
= a - b + ab + b - c + bc + c - a + ca
= (a - a) + (-b + b) + (-c + c) + ab + bc + ca
= ab + bc + ca
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