Question

(x-3 9/13)+5 10/13=12 4/13

Answer 1

х-3 9/13=12 4 13/-5 10/13
х-3 9/13=11 17/13-5 10/13
х-3 9/13=6 7/13
х= 6 7/13 + 3 9/13
х=9 16/13
х= 10 3/13

Answer 2

как получилось 6 7/13???