Решите неравенства: 1. -10+2(-5х-8)>9 2. 3(-7+x)-7 3. -10+6(7-5x)<2x-8 4....

Question

Решите неравенства:
1. -10+2(-5х-8)>9
2. 3(-7+x)-7 3. -10+6(7-5x)<2x-8 <br> 4. 4+8(3+7x)>-4x-8

Срочно надо,помогите

Answer 1

1. -10 + 2(-5х - 8) > 9
-10 - 10x - 16 > 9
10x < 17
x = 1.7

3. -10+6(7-5x)<2x-8<br>-10 + 42 - 30x < 2x - 8
40 < 32x
x > 4/5

4. 4+8(3+7x)>-4x-8
4 + 24 + 56x > -4x - 8
36 > -60x
60x > -36
x > -3/5