12 целых 7/23- ( 6 целых 18/23-t) = 8 целых 40/23

Question

12 целых 7/23- ( 6 целых 18/23-t) = 8 целых 40/23

Answer 1

12 7/23 - ( 6 18/23 - t) = 8 40/23;
12 7/23 - 6 18/23 + t = 8 40/23;
5 12/23 + t = 8 40/23;
t = 8 40/23 - 5 12/23;
t = 4 5/23.