simplifique o resultado quando possível. 2/5+3/7, 1+2/25, 1/10+7/10, 1/6+5/12+1/4, 27/36-4/6, 1/5-2/25, 5/28-3/28, 8/13-7/26
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a)2/5 + 3/7 =
m.m.c = 35
14/35 + 15/35 = 29/35
b)1 + 2/25 =
m.m.c = 25
25/25 + 2/25 = 27/25
c)1/10 + 7/10 = 8/10 = 4/5
d)1/6 + 5/12 + 1/4
m.m.c = 12
2/12 + 5/12 + 3/12 = 10/12 = 5/6
e)27/36 - 4/6 =
m.m.c = 36
27/36 - 24/36 = 3/ 36 = 1 / 12
f)1/5 - 2/25 =
m.m.c = 25
5/25 - 2/25 = 3/25
g)5/28 - 3/28 = 2/28 = 1/14
h)8/13 - 7 /26 =
m.m.c = 26
16/26 - 7/26 = 9/26
m.m.c = 35
14/35 + 15/35 = 29/35
b)1 + 2/25 =
m.m.c = 25
25/25 + 2/25 = 27/25
c)1/10 + 7/10 = 8/10 = 4/5
d)1/6 + 5/12 + 1/4
m.m.c = 12
2/12 + 5/12 + 3/12 = 10/12 = 5/6
e)27/36 - 4/6 =
m.m.c = 36
27/36 - 24/36 = 3/ 36 = 1 / 12
f)1/5 - 2/25 =
m.m.c = 25
5/25 - 2/25 = 3/25
g)5/28 - 3/28 = 2/28 = 1/14
h)8/13 - 7 /26 =
m.m.c = 26
16/26 - 7/26 = 9/26
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