解下列不等式..急！！

5x + 15 > 4x - 1
5x-4x>-1-15
x>-16

2（x + 5）< 3(x - 5)
2x+10<3x-15
3x-2x>10+15
x>25

x-1/7 < 2x+5/3
2x-x>-1/7-5/3
x>-38/21

x+1/6 < 2x-5/4 + 1
2x-x>1/6+5/4-1
x>5/12

1. 5x + 15 > 4x - 1
5x-4x >-1-15
x>-16

2. 2（x + 5）< 3(x - 5)
2x +10 < 3x -15
2x-3x<-15-10
-x<-25
x>25

3. x-1/7 < 2x+5/3
3(x-1)<7(2x+5)
3x-3<14x+35
3x-14x<35+3
-11x<38
x>-38/11

4. x+1/6 < 2x-5/4 + 1
x+1/6 < 2x-1/4
4(x+1)<6(2x-1)
4x+4<12x-6
4x-12x<-6-4
-8x<-10
x>5/4

①5x + 15 > 4x - 1
5x-4x>-1-15
x>-16

②2（x + 5）< 3(x - 5)
2x+10<3x-15
3x-2x>10+15
x>25

③x-1/7 < 2x+5/3
2x-x>-1/7-5/3
x>-38/21

④x+1/6 < 2x-5/4