159*353535/565656-105*103/104

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159*353535/565656-105*103/104
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159*353535/565656-105*103/104
159*353535/565656-105*103/104

159*353535/565656-105*103/104
159*353535/565656-105*103/104
=159*35*10101/56*10101-105*103/104
=159*35/56-105*(1-1/104)
=159*5/8-105+105*1/104
=10440/104-105
=1305/13-105
=-60/13

159*353535/565656-105*103/104
=159*5/8-(104*104-1)/104
=795/8-104+1/104
=1/104-37/8
=-480/104
=-60/13