Решение уравнений:

1. a) (x - 47) + 63 = 100

   x - 47 = 100 - 63

   x - 47 = 37

   x = 37 + 47

   x = 84

2. б) 120 – (x + 96) = 24

   x + 96 = 120 - 24

   x + 96 = 96

   x = 96 - 96

   x = 0

3. в) 48 + (56 - x) = 48

   56 - x = 48 - 48

   56 - x = 0

   x = 56 - 0

   x = 56

4. г) (90 - x) - 32 = 58

   90 - x = 58 + 32

   90 - x = 90

   x = 90 - 90

   x = 0