Question

alguien sabe resolver esto??

Answer 1

2/10-8/5=-14/10=-7/5 se agrega 1
-7/5+1=-2/5
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(4/3) / (2/9)=(4*9)/(2*3)= 6
la mitad 6/2=3
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7/10*5/2= 35/20= 7/4

1/5 de 7/4= 7/20