Calcule o valor das expressões
a) 2 (+5) + 13 =
b) 3. (-3) + 8=
c) -17 + 5 . (-2)=
d) (-9). 4+ 14 =
e) 40 : (-2) + 9 =
f(-12).3+ 6=
g) (-54) : (-9) + 2 =
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