April 2021 0 29 Report
5)suprimir los parentesis y resolver: a) -(-3+5-9)+-5-6+3-(3+9-6-2)=

b)6+(-11+5-4)-(8-5-=

c)-2+(-51)-3+(-2+6)=

d) (4+3-1)-2+7-5)-(6)=​

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