Question

ayuda 2x+[-5x-(-2y+{-x+y})]

Answer 1

Te explico
 esta es una supresión de signos para suprimir signos de agrupacion se sigen 2 reglas la primera regla es que si un signo de agrupacion esta precedido por el mas (+) copiamos los numeros con su mismo signo , la segunda regla dice que si un signo de agrupacion esta precedido por el menos (-) se cambia de signos a los numeros ejemplo : -(8) = -8
 2x+[-5x-(-2y+{-x+y})]
2x+[-5x-(-2y-x+y)]
2x+[-5x+2y+x-y]
2x-5x+2y+x-y
Ahora reducimos términos semejantes
primero sumamos 2x-5x+x=(2-5+1)x= -2x
después sumamos 2y-y = (2-1) y =1y
entonces la repuesta es:
-2x+1y
espero ha verte ayudado

Answer 2

Respuesta:

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