Hay que pasar a fraccion:
[tex]3\frac{1}{5}=3*5+1=16--->\frac{16}{5}[/tex]
[tex]2\frac{3}{4}=4*2+3=11--->\frac{11}{4}[/tex]
igualamos denominadores:
[tex]\frac{64}{20}- \frac{55}{20}= \frac{9}{20}[/tex]
rpta:a)9/20
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Hay que pasar a fraccion:
[tex]3\frac{1}{5}=3*5+1=16--->\frac{16}{5}[/tex]
[tex]2\frac{3}{4}=4*2+3=11--->\frac{11}{4}[/tex]
igualamos denominadores:
[tex]\frac{64}{20}- \frac{55}{20}= \frac{9}{20}[/tex]
rpta:a)9/20