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If a+b+c=-4 and x+y=5. What is 9x-8c-8b-8a+9y?

If a+b+c=-4 and x+y=5. What is 9x-8c-8b-8a+9y?-example-1

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Answer: 77

x+y=5 then 9x+9y=45

a+b+c=-4 then -8a-8b-8c=32

Add them together and you’re get 9x-8c-8b-8a+9y=77

User Henry Yang
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