Question

12 5/13+ y) - 9 9/13

даю 10 балов​

Answer 1

(12 5/13 + у)-9 9/13= 7 7/13
12 5/13 + у= 7 7/13+9 9/13
12 5/13+у=17 3/13
у= 17 3/13-12 5/13
у=4 11/13