Calcule:
a)1,2 - (-5) - (+3/5)
b)-2/5 + [-3+(-1/4 + 1/2)]
c)(-5/7)×(-3/2)
d)(-1/9)÷(+7/5)
e)[(-1/2)elevado a 3 +2×(-1)elevado a 4]÷1/2
f)raiz quadrada de 36/25 ÷(-1/2)elevado a 2
g)(-1/5)elevado a 4
h)(5/8+ 5/4 + 5/2)÷(-5/8)
i)(-27/51)°
obs: preciso urgente até 9 horas pfvvv
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