5/8+7/8= 1/2-1/5= 0.48+0.04= 0.25*0.4= 1-0.09= 5/4-0.2= 4/5+1/2+1/5= 9/10+1/20+9/10=
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![5/8+7/8= 1/2-1/5= 0.48+0.04= 0.25*0.4= 1-0.09= 5/4-0.2= 4/5+1/2+1/5= 9/10+1/20+9/10=](/uploads/image/z/2669279-23-9.jpg?t=5%2F8%2B7%2F8%3D+1%2F2-1%2F5%3D+0.48%2B0.04%3D+0.25%2A0.4%3D+1-0.09%3D+5%2F4-0.2%3D+4%2F5%2B1%2F2%2B1%2F5%3D+9%2F10%2B1%2F20%2B9%2F10%3D)
5/8+7/8= 1/2-1/5= 0.48+0.04= 0.25*0.4= 1-0.09= 5/4-0.2= 4/5+1/2+1/5= 9/10+1/20+9/10=
5/8+7/8= 1/2-1/5= 0.48+0.04= 0.25*0.4= 1-0.09= 5/4-0.2= 4/5+1/2+1/5= 9/10+1/20+9/10=
5/8+7/8= 1/2-1/5= 0.48+0.04= 0.25*0.4= 1-0.09= 5/4-0.2= 4/5+1/2+1/5= 9/10+1/20+9/10=
5/8+7/8=3/2=1又1/2 1/2-1/5= 3/10 0.48+0.04=0.52 0.25*0.4=0.1 1-0.09= 0.91 5/4-0.2=1.05 4/5+1/2+1/5= 1.5 9/10+1/20+9/10=1.85