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-2/3 + [3/5 + -5/7]
HELP

Sagot :

Answer:

[tex]=-\frac{82}{105}[/tex]

Step-by-step explanation:

[tex]-\frac{2}{3}+\left[\frac{3}{5}+\left(-\frac{5}{7}\right)\right][/tex]

[tex]\frac{3}{5}+\left(-\frac{5}{7}\right)[/tex]

[tex]=-\frac{4}{35}[/tex]

[tex]=-\frac{2}{3}-\frac{4}{35}[/tex]

[tex]=-\frac{82}{105}[/tex]