Encontre o resultado dos cálculos abaixo:  a)7/5-3/5=
 b)1/5+3/2=
 c)2/9+5-2/5=
d) 4/8+2/8=
e) 4/5-2/7=
f) 1/8+1/4+5/6=
g)3/4+5/12=
h) 3-1/2+7/6=
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