Respostas
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a)4/10-2/10=2/10
b)6/7-3/7=3/7
c)11/8-10/8=1/8
d)6/9-2/8=4/8:4=1/2
e)13/5-10/5=3/5
a)1/2+2/2+4/2=7/2
b)2/8+1/8+4/8=7/8
c)2/10+3/20+4/10=9/10
d)12/15+1/15=13/15
e)4/7+1/7=5/7
b)6/7-3/7=3/7
c)11/8-10/8=1/8
d)6/9-2/8=4/8:4=1/2
e)13/5-10/5=3/5
a)1/2+2/2+4/2=7/2
b)2/8+1/8+4/8=7/8
c)2/10+3/20+4/10=9/10
d)12/15+1/15=13/15
e)4/7+1/7=5/7
helenadiasdequadros:
Obrigada!
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