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1/2x > 9-3
1/2x >6
x >6.2/1
x > 12
2. 2/3x -5 ≤ 7
2/3x ≤ 7+5
2/3x ≤ 12
x ≤ 12.3/2
x ≤ 18
3. 3/4x - 2 > -3
3/4x > -3+2
3/4x > -1
x > -1.4 /3
x > -3/4
4.1/6 - 1/2 y < 7
-1/2 y < 7 -1/6
-1/2 y < 42-1/6
-1/2y < 41/6
y < 41/6 . 2/-1
y < -82/6
y < -13 4/6
5. 2/3y + 2 ≥ 1/4
2/3y ≥ 1/4 -2
2/3y ≥ 1-8/4
2/3y ≥ -7/4
y ≥ -7/4 .3/2
y ≥ -21/8
=2(1/2 +3 > 2(9)
1x+6>18
x>18-6
x>12
2)2/3x-5≤7
=2x-15≤21
2x≤21+15
2x≤36
x≤18
3)3/4x-2>-3
3x-6>12
3x>12+6
3x>18
x>6
4)1/6-1/2y<7
1-3y<42
-3y<41
3y>-41
y=13,66
5)2/3y+2≥1/4
8y+24≥3
8y≥21
y≥2,625