12) Aplique a propriedade distributiva em cada item e simplifique as expressões algébricas.

A) 5•(2x+4)

B) -8n-(n+9)+21

C) 3x+(x-2)-(6x-9)

D) (X-y+4)-(2x+6y+10)

E)- (-13y+32)-(-y+3)

F) (a+7b)-(2a+b)-(11a-8b)

PORFAVOR ME AJUDEM!!!!!!!!​
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