Respuesta :

-(3x - 4y) + x = -3x - (-4y) + x = -3x + x + 4y = -2x + 4y
[tex]-(3x - 4y) + x [/tex]

[tex] -3x - (-4y) + x[/tex]

[tex] -3x + x + 4y [/tex]

[tex]= -2x + 4y[/tex]
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