[tex]\mathrm{Quitar\:los\:parentesis}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a[/tex]
[tex]\bold{\frac{2}{3}\cdot \frac{2}{5}\cdot \frac{5}{2}}[/tex]
[tex]\mathrm{Multiplicar\:fracciones}:\quad \frac{a}{b}\cdot \frac{c}{d}=\frac{a\:\cdot \:c}{b\:\cdot \:d}[/tex]
[tex]\bold{=\frac{2\cdot \:2\cdot \:5}{3\cdot \:5\cdot \:2}}[/tex]
[tex]\mathrm{Eliminar\:los\:terminos\:comunes:}\:2[/tex]
[tex]\bold{=\frac{2\cdot \:5}{3\cdot \:5}}[/tex]
[tex]\mathrm{Eliminar\:los\:terminos\:comunes:}\:5[/tex]
[tex]\boxed{\bold{=\frac{2}{3}}}}[/tex]
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[tex]\mathrm{Quitar\:los\:parentesis}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a[/tex]
[tex]\bold{\frac{2}{3}\cdot \frac{2}{5}\cdot \frac{5}{2}}[/tex]
[tex]\mathrm{Multiplicar\:fracciones}:\quad \frac{a}{b}\cdot \frac{c}{d}=\frac{a\:\cdot \:c}{b\:\cdot \:d}[/tex]
[tex]\bold{=\frac{2\cdot \:2\cdot \:5}{3\cdot \:5\cdot \:2}}[/tex]
[tex]\mathrm{Eliminar\:los\:terminos\:comunes:}\:2[/tex]
[tex]\bold{=\frac{2\cdot \:5}{3\cdot \:5}}[/tex]
[tex]\mathrm{Eliminar\:los\:terminos\:comunes:}\:5[/tex]
[tex]\boxed{\bold{=\frac{2}{3}}}}[/tex]