Respuesta:
-4+14= +10
-2-9= -11
-7+21=+14
17-20= -3
-31+18= -13
-7.5-2.5= -10
-9+4= -5
-9-9= -18
Explicación paso a paso:
No pude resolver la ultima
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Respuesta:
-4+14= +10
-2-9= -11
-7+21=+14
17-20= -3
-31+18= -13
-7.5-2.5= -10
-9+4= -5
-9-9= -18
Explicación paso a paso:
No pude resolver la ultima