November 2018 1 35 Report
Calcula:
a) 3 -1 +5 +6 -9 -7 +10 =
b) –5 -6 +9 +2 -11 +3 -5 =
c) (-8) - (-4) + (-6) - (+2) - (-9) =
d) (+7) - (+5) + (-11) - (-9) + (+4) =

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