№1 3целых 4/7 - 2целых 3/5=?

6целых 5/6 + 2целых 3/8=?

4целых 5/14 + (5целых 1/12 - 3целых 4/21)=?

№2.решите уравнение.
8целых 9/26 - y =5целых 7/39
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