Реши уравнения. (81 - x) : 5 = 12, (c - 24) * 6 = 78

Решим уравнения:

1. (81 - x) : 5 = 12
   81 - x = 12 × 5
   81 - x = 60
   x = 81 - 60
   x = 21
2. (c - 24) × 6 = 78
   c - 24 = 78 : 6
   c - 24 = 13
   c = 13 + 24
   c = 37