8 7/18-(1 11/15+y)=3 4/15 + 2 13/45

1)3 4/15 + 2 13/45 + 1 11/15 = 7 13/452) -у = 7 13/45 - 8 7/183) -у = - 1 1/104) у =  1 1/10 = 1,1

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