Объяснение:
147
1.
{3x≥18
{2x<11
{x≥18:3
{x<11:2
{x≥6
{x<5,5
x∈ø
2.
{4x≥2
{4x<6
{x≥2:4
{x<6:4
{x≥1/2
{x<3/2
x∈[1/2;3/2)
3.
{2-3x<5
{0,1-0,2x>0,4
{-3x<5-2
{-0,2x>0,4-0,1
{-3x<3
{-0,2x>0,3
{x>3:(-3)
{x<0,3:(-0,2)
{x> -1
{x< -1,5
4.
{9-0,5y≥0,5y
{0,3y-1≥2
{y≤9
{0,3y≥2+1
{0,3y≥3
{y≥3:0,3
{y≥10
y=ø
150.
{1,5x-7,5≥0
{-2/3x> -4
{1,5x≥7,5
{x< -4:(2/3)
{x≥7,5:1,5
{x< -6
{x≥5
{x<6
x∈[5;6)
{3y-10≤5-2y
{2y-9≥3y-11
{3y+2y≤5+10
{2y-3y≥ -11+9
{5y≤15
{-y≥ -2
{y≤15:5
{y≤2
{y≤3
y∈(-∞;2]
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Verified answer
Объяснение:
147
1.
{3x≥18
{2x<11
{x≥18:3
{x<11:2
{x≥6
{x<5,5
x∈ø
2.
{4x≥2
{4x<6
{x≥2:4
{x<6:4
{x≥1/2
{x<3/2
x∈[1/2;3/2)
3.
{2-3x<5
{0,1-0,2x>0,4
{-3x<5-2
{-0,2x>0,4-0,1
{-3x<3
{-0,2x>0,3
{x>3:(-3)
{x<0,3:(-0,2)
{x> -1
{x< -1,5
x∈ø
4.
{9-0,5y≥0,5y
{0,3y-1≥2
{y≤9
{0,3y≥2+1
{y≤9
{0,3y≥3
{y≤9
{y≥3:0,3
{y≤9
{y≥10
y=ø
150.
1.
{1,5x-7,5≥0
{-2/3x> -4
{1,5x≥7,5
{x< -4:(2/3)
{x≥7,5:1,5
{x< -6
{x≥5
{x<6
x∈[5;6)
2.
{3y-10≤5-2y
{2y-9≥3y-11
{3y+2y≤5+10
{2y-3y≥ -11+9
{5y≤15
{-y≥ -2
{y≤15:5
{y≤2
{y≤3
{y≤2
y∈(-∞;2]