Respuesta :

wegnerkolmp2741o

Answer:

-40

Step-by-step explanation:

-9a-7x-9c-9b-7y

group the terms

-9a-9b-9c -7x-7y

factor out -9 and 7

-9(a+b+c) -7(x+y)

replace a+b+c with -1 and x+y with 7

-9 (-1) -7(7)

9 -49

-40

kenide992
If a + b + c = -1 and x + y = 7
what is -9a-7x-9c-9b-7y

answer:40

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