2(x+9)>7-(x-5).....................2
From 1
x & lt2
Derived from equation 2
2x+ 18 & gt; 7 x+5
2x+ 18 & gt; 12-x
2x+x & gt; 12- 18
3x & gt-6
x & gt-2
sulphur dioxide
3(x+)& lt; 5x+4........................... 1
(x- 1)/2 & lt; =(2x- 1)/3...................2
From 1
3x+3 & lt; 5x+4
3x-5x & lt; 4-3
-2x & lt; 1
x & gt- 1/2
Derived from equation 2
3(x- 1)& lt; =2(2x- 1)
3x-3 & lt; =4x-2
3x-4x & lt; =3-2
-x & lt; = 1
x & gt=- 1
So x>- 1/2