Respuesta:
1: 18+(-9)=9
2: 18+(-9)+14=23
3:18-(-9)= -27
4:(-9)-14= -23
5: 50+12+(-37)= 25
6: 12-(-37)= -49
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Respuesta:
1: 18+(-9)=9
2: 18+(-9)+14=23
3:18-(-9)= -27
4:(-9)-14= -23
5: 50+12+(-37)= 25
6: 12-(-37)= -49