Respuesta:
1 ) 13/2+15/2+17/2
13 + 15 + 17 / 2
45/2
2) 19/6-37/6
19 - 37 / 6
-18/6
-3
3) 18/7-29/7-23/7
18 - 29 - 23 / 7
-34/7
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Respuesta:
1 ) 13/2+15/2+17/2
13 + 15 + 17 / 2
45/2
2) 19/6-37/6
19 - 37 / 6
-18/6
-3
3) 18/7-29/7-23/7
18 - 29 - 23 / 7
-34/7