1. - 4 11/15-6 37/100=-75/15-637/100=-1420/300-1911/300=-11 31/100
-11 31/100-2 75/100=-1131/100-276/10=-1406/100=703/50=-14 3/50
-14 3/50-2 4/15=-703/50-34/15=-2009/150-340/150=-16 49/150
-16 49/150+14 37/100= - 2449/150+1437/100=-4898/300+4311/300=-1 287/300