А) 12-1/7 б) 21- 4/13

Question

А) 12-1/7 б) 21- 4/13

Answer 1

12/1-1/7=12×7-1×1=84-1=83; 83/7; б) 21/1-4/13=13×21-4=273-4=269; 269/13;

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