¿eliminar los simbolos de agrupacion y simplificar las expresiones por reduccion de terminos semejantes?

porfavor ayudenme a resolver estos ejercicios es urgente xfa

5y+2x-(y+5x+2)+(-2x+3y+72=

8a [4b-11c+2-(3b+2c-7)+3a]

-[5-(6xy-z)+2xy+7z+3]+5xy

(4x-3y+2)-[y+(1-x)+2y+3]

{7-[-8x+3x-(-x-10y-3)-7x+2-3y]}

{x-5y-[2x-(7x-y+5)+6z]-3y}+2

5a-{3b-8c-[a+2c+6b-(b-c)-3a]-5c}

{4m-[n-6-(2m-4n+z)+7n]-3m}

espero me puedan ayudar de antemano gracias

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