-3 8/31+4,1=-101/31+41/10=-1010/310+1271/310=261/310
261/310+(-6)=261/310-6=261/310-1860/310=-1599/310
-1599/310+2,9=-1599/310+29/10=-1599/310+899/310=-700/310=-70/31=-2 8/31
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-3 8/31+4,1=-101/31+41/10=-1010/310+1271/310=261/310
261/310+(-6)=261/310-6=261/310-1860/310=-1599/310
-1599/310+2,9=-1599/310+29/10=-1599/310+899/310=-700/310=-70/31=-2 8/31