2)a) 25/5 +1/5 =5 1/5b) 120/8 +5/8 =15 5/8c) 36/6 +6/6 = 6 6/6d) 143/13 +4/13 =11 4/13
3)a)2 +1/3 =6/3 +1/3 =7/3b)1+2/7 =7/7 +2/7 =9/7c)4+2/7 =28/7 +2/7 =30/7d)3 +5/11 = 33/11 +5/11 =38/11
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2)
a) 25/5 +1/5 =5 1/5
b) 120/8 +5/8 =15 5/8
c) 36/6 +6/6 = 6 6/6
d) 143/13 +4/13 =11 4/13
3)
a)2 +1/3 =6/3 +1/3 =7/3
b)1+2/7 =7/7 +2/7 =9/7
c)4+2/7 =28/7 +2/7 =30/7
d)3 +5/11 = 33/11 +5/11 =38/11
a) 5 (26 / 5 = 5 e sobra 1)
b) 15 (125 / 8 = 15 e sobra 5)
c) 7 (42 / 7 = 6 e sobra 0) ou 6
d) 11 (147 / 13 = 11 e sobra 4)
3)
a) => (3 * 2 + 1)/3 = 7/3
b) => (7*1 + 2) /7 = 9/7
c) => (7*4 + 2) / 7 = 30/7
d) => (11*3 + 5) / 11 = 38/11
Espero que ajude