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-6 + -3
-1 + -8
-7 + -3
x
x+1
x+2
entonces:
x+x+1+x+2= -9
x+x+x+1+2= -9
3x+3= -9
3x= -9-3
3x= -12
x= -12/3
x= -4
x= -4
x+1.....-4+1= -3
x+2.....-4+2= -2
los numeros son -4 , -3 y -2