2ab+3bc-9ca from 6ab-2bc-2ca+18abc
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Answer:
=4ab-5bc-2ca+18abc
Step-by-step explanation:
(6ab-2bc-2ca+18abc)- (2ab+3bc-9ca)
6ab-2bc-2ca+18abc-2ab-3bc+9ca
4ab-5bc-2ca+18abc
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