Question

subtract 8a-7ab+3b-20 from 20a-20-9ab​

Answer 1

Step-by-step explanation:

=20a-20-9ab-(8a-7ab+3b-20)

=20a-20-9ab-8a+7ab-3b+20

=20a-9ab-20-8a+7ab+20-30b

=12a-2ab-30b

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Answer 2

I have done both the methods. You can use any one of them. Please mark as brainliest and thank me if it helped you. ^_^