7a-3b+2ab, 7b-2c + 3bc, 5c-3a + 2ac
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Answered by
9
Answer:
18
Step-by-step explanation:
=(7a-3b+2ab) + (7b-2c+3bc) + (5c-3a+2ac)
=7a-3b+2ab+7b-2c+3bc+5c-3a+2ac
=7a-3a-3b+7b+2ab-2c+5c+3bc+2ac
=4a+4b+2ab+3c+3bc+2ac
=10+8=18
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