November 2018 1 30 Report
Eliminar ( ), cancelar cuando sea posible y luego resolver.
a. (-7)+3
b.(-4)+(-3)
c.15-(-1)-(+13)
d.-12-(-4)+(-3)
e.-100-(+90)-15-(-100)
f.6+50-7+4-9+2-3-50+10
g.7-(6-4+12-3+4)+(-9)
h.(5-3+1)-(9-2+5)
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