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(-0,75)=(-75/100)= - (75:25)/(100:25)= (-3/4);
X= volver fraccion;
X •(-0,75)= 1;
X• (-75/100)= 1;
X• (-3/4)= 1;
X= 1: (-3/4);
X= 1• (-4/3);
X= (-4/3);
X= (-1 1/3);
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(-1 1/3)• (-0,75)= (-4/3)• (-3/4)= 1/1•1/1=1; Respuesta; volver fracción es (-1 1/3).
0,5= 5/10= (5:5)/(10:5)=1/2;
X=volver fracción;
X•0,5=1;
X•1/2=1;
X=1: 1/2;
X=1• 2/1;
X=2;
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2• 1/2= 2/1• 1/2= 1/1• 1/1= 1;
Respuesta; volver fracción es 2.