Решим уравнения:
x + 4,83 = 9
x = 9 - 4,83
x = 4,17
43,78 - x = 5,384
x = 43,78 - 5,384
x = 38,396
x - 14,852 = 15,148
x = 15,148 + 14,852
x = 30
2,395 + x = 10
x = 10 - 2,395
x = 7,605
Ответ: 1) x = 4,17; 2) x = 38,396; 3) x = 30; 4) x = 7,605