1. 1/8x<4 x< 32 5-6x ≥0 6x ≤5 x≤5/6<br> 1.7-6x +2>0.3-4x 2x < -3.7 +0.3 = -3.4 x<-1.7<br>
2. 3-4c<(6-5c)/5 15-20c<6-5c 15c>9 c>9/15=0.6
3. 6-2x>1 2x<5 <strong> x<2.5</strong>
3x+1<13 3x<12 <strong> x<4</strong>
----------------------- 2.5---------------------4--------------
/////////////////////////////// x<2.5<br>
4x≥5 x≥5/4
6x≤16 x≤16/6=8/3
5/4 ≤x≤8/3
4. 3x+1=7 x1=2 3x+1=-7 x2=-8/3
1-2x=43 2x=-42 x1=-21 1-2x=-43 2x=44 x2=22
5. -2≤2x-7≤2 5≤2x≤9 2.5≤x≤4.5
18-x>48 x<-30 18-<strong>x<-48</strong> x>66