−3ac + 5a − 2ab ; 7ab + 5bc − 3ca and 9ac − 4b + 4bc
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−3ac + 5a − 2ab ; 7ab + 5bc − 3ca and 9ac − 4b + 4bc
= -3ac + 5a - 2ab + 7ab + 5bc - 3ca + 9ac − 4b + 4bc
= -3ac - 3ac + 9ac + 5a - 2ab + 7ab + 5bc + 4bc - 4b
= 3ac + 5a + 5ab + 9bc - 4b
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= -3ac + 5a - 2ab + 7ab + 5bc - 3ca + 9ac − 4b + 4bc
= -3ac - 3ac + 9ac + 5a - 2ab + 7ab + 5bc + 4bc - 4b
= 3ac + 5a + 5ab + 9bc - 4b
Hope it helps you
Mark me as a brainlist please ❤️❤️
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