Resolva as expressões numéricas a seguir

A) 4+2-(6-5)+(7-3)-4=


B) 8+[5-2+(9-5)+7-2=


C) 12+[7-5-(20-16)+3+4]+2=


D)18-5+[11-9+(15-4+6)+22-14+7]=


Gente eu quero á resposta serta nada de resposta incompleta por favor quem souber responde: )
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