Решите уравнения: 28 * (х+5) = 224 144: (х-3) = 36 (х+67) : 18=4 (4n+3n) * 11=154 (19n-6n) : 4=26 (17n-8n) * 13=354

Решим уравнения:

1) 28 * (х + 5) = 224;

Обе части уравнения разделим на 28.

x + 5 = 224/28;

x + 5 = 8;

x = 8 - 5;

x = 3;

2) 144 / (х - 3) = 36;

Умножим крест на крест.

36 * (x - 3) = 144;

x - 3 = 144/36;

x - 3 = 4;

x = 4 + 3;

x = 7;

3) (х + 67) / 18 = 4;

x + 67 = 18 * 4;

x + 67 = 72;

x = 72 - 67;

x = 5;

4) (4 * n + 3 * n) * 11 = 154;

7 * n * 11 = 154;

77 * n = 154;

n = 154/77;

n = 2;

5) (19 * n - 6 * n) / 4 = 26;

13 * n/4 = 26;

1 * n/4 = 2;

n/4 = 2;

n = 2 * 4;

n = 8;

6) (17 * n - 8 * n) * 13 = 354;

9 * n * 13 = 354;

117 * n = 354;

n = 354/117.