4) 4(u + 3) < 3(u + 2) ; 1) 3 - 2(u - 1) > 8 + u 2) 5(u + 2) + 14 < 6 - u 5) (2u + 1) > 5(u - 1) ; 3) - (3 + 8u) > 6, 25 + u 6) 3/5 * (5u - 2/3) < u + 7, 6

1. 4(u + 3) < 3(u + 2): 4u + 12 < 3u + 6; u < -6.

2. 3 - 2(u - 1) > 8 + u: 3 - 2u + 2 > 8 + u; 5 > 3u; u < 5/3.

3. 5(u + 2) + 14 < 6 - u: 5u + 10 + 14 < 6 - u; 5u + 24 < 6 - u; 6u < -18; u < -3.

4. (2u + 1) > 5(u - 1): 2u + 1 > 5u - 5; 2u - 5u > -5 - 1; -3u > -6; u < 2.

5. • (3 + 8u) > 6, 25 + u: -3 - 8u > 6, 25 + u; -8u > 9, 25 + 8u; -u > 34; u < -34.

6. 3/5 * (5u - 2/3) < u + 7, 6: (3/5) * (5u - 2/3) < u + 42/3; (3/5) * (5u - 2/3) < u + 14; 3u - 2/5 < 5u/5 + 14; 3u - 2/5 < u + 14; 2u < 2 + 14 - 2/5; u < 16 3/5.

Ответы:

1. u < -6.
2. u < 5/3.
3. u < -3.
4. u < 2.
5. u < -34.
6. u < 16 3/5.