September 2018 1 37 Report
Suprime signos de agupacion y resuelve

a 9-(12-6+2)+4+(-8+1)

b 8-[10-(-8+5)+(7-9)]+6

c -6+[15-{11+4)-(3-2)+3}+7]

d -1+[4-(3-2)]-[2+(-7+4)]

e -[7-(-6+5)-8+(2+5)]+6

f 1-{4-[-2+(5-1-9)-1]+2}+3
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