Respuesta:
Explicación paso a paso:
( - 12 ) + ( 18 ) + ( 54 ) = 60
( 15 ) - ( 9 ) - ( -11 ) = 17
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Respuesta:
Explicación paso a paso:
( - 12 ) + ( 18 ) + ( 54 ) = 60
( 15 ) - ( 9 ) - ( -11 ) = 17