(5a-7b)3+(9c-5b) 3+(7b-9c) 3
manjotkaur12:
15a-21b+27c-15b+21b-27c and then 15a-15b
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15a - 15b answer is this
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15a-21b+27c-15b+21b-27c=15a-15b=15(a-b)
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