226. Решите уравнение: 1) x + 3,82 = 7; 2) 28,9 − x = 5,347; 3) x − 23,427 = 6,873; 4) (81 − x) + 27,8 = 39,156.

1. \(x+3.82=7\)

   \(x=7-3.82=3.18\)

2. \(28.9-x=5.347\)

   \(x=28.9-5.347=23.553\)

3. \(x-23.427=6.873\)

   \(x=6.873+23.427=30.3\)

4. \((81-x)+27.8=39.156\)

   \(81-x=39.156-27.8=11.356\)

   \(x=81-11.356=69.644\)

Ответ: 1) \(x=3.18\); 2) \(x=23.553\); 3) \(x=30.3\); 4) \(x=69.644\).