Respuesta:
2.
71/35
110/63
3.
47/30
15/56
135/130
16/15
25/77
Explicación paso a paso:
8/5 + 3/7 = (56 + 15) / 35 = 71/35
13/7 - 1/9 = (117 - 7) / 63 = 110/63
7/6 + 2/5 = (35 + 12) / 30 = 47/30
1/7 + 1/8 = (8 + 7) / 56 = 15/56
7/13 + 5/10 = (70 + 65) / 130 = 135/130
7/5 - 1/3 = (21 - 5) / 15 = 16/15
8/7 - 9/11 = (88 - 63) / 77 = 25/77
ahí está espero te sirva :')
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Respuesta:
2.
71/35
110/63
3.
47/30
15/56
135/130
16/15
25/77
Explicación paso a paso:
8/5 + 3/7 = (56 + 15) / 35 = 71/35
13/7 - 1/9 = (117 - 7) / 63 = 110/63
7/6 + 2/5 = (35 + 12) / 30 = 47/30
1/7 + 1/8 = (8 + 7) / 56 = 15/56
7/13 + 5/10 = (70 + 65) / 130 = 135/130
7/5 - 1/3 = (21 - 5) / 15 = 16/15
8/7 - 9/11 = (88 - 63) / 77 = 25/77
ahí está espero te sirva :')