Respuesta :
Answer:
[tex]-\frac{3}{7}-(-\frac{2}{3})=\\ \\=-\frac{9}{21}+\frac{14}{21}\\ \\=\frac{14-9}{21}\\[/tex]
[tex]\frac{5}{21}[/tex]
Answer:
[tex]-\frac{3}{7}-(-\frac{2}{3})=\\ \\=-\frac{9}{21}+\frac{14}{21}\\ \\=\frac{14-9}{21}\\[/tex]
[tex]\frac{5}{21}[/tex]