Respuesta:
5+(-7)-8
5-7-8
-2-8= -10
[4-(-2+1)+3]-(-9)
[4-(-1)+3]-(-9)
[5+3]-(-9)
8+9= 17
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Respuesta:
5+(-7)-8
5-7-8
-2-8= -10
[4-(-2+1)+3]-(-9)
[4-(-1)+3]-(-9)
[5+3]-(-9)
8+9= 17