Question

(5a+3b-7c)+(7a-7b+2c)-(3a-2b-4c)?​

Answer 1

Answer:

9a -6b-9c

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Answer 2

Answer:

9a-2b-c

Step-by-step explanation:

(5a+3b-7c)+(7a-7b+2c)-(3a-2b-4c)

5a+3b-7c+7a-7b+2c-(3a-2b-4c)

12a-4b-5c-3a+2b+4c

=9a-2b-c

(I think it will be useful to you)

(thanks)