November 2018 2 91 Report
Calcule el valor de cada una de las expresiones numéricas
a. (99 + 17) - (45 + 38)
b. 4+[3+(2-1)+7]
c [5-(2-1)+72]
d. 3+{10-[4-(3-1]}
e. {[(4+1)-(5-3)+2]+9}


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