Some as frações:
A) 2/3 + 5/7
B) 1/2 + 1/4 + 2/5
C) 6/7 + 5/15 - 1/5
D) 9/8 - 1/12 + 3/4
E) 5/4 - 3/8 + 1/3
F) 2/15 - 7/15
G) 9/17 - 3/17 - 12/17 - 5/17
H) 9/12 - 3/12 + 5/12
A) 2/3 + 5/7
B) 1/2 + 1/4 + 2/5
C) 6/7 + 5/15 - 1/5
D) 9/8 - 1/12 + 3/4
E) 5/4 - 3/8 + 1/3
F) 2/15 - 7/15
G) 9/17 - 3/17 - 12/17 - 5/17
H) 9/12 - 3/12 + 5/12
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