Respuesta :

[tex]-\frac{3}{4}-(-\frac{1}{4}-\frac{1}{2})=-\frac{3}{4}+\frac{3}{4}=-\frac{3}{4}+(\frac{1}{4}+\frac{1}{2})=-\frac{3}{4}-(-\frac{1}{4}+(-\frac{1}{2}))[/tex]

so the correct options are 2, 5 and 6

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