1)
2x — 4 > 6

X€(5;∞)
2x + 3 ≤ 1

(-∞-1]
7x — 7 > — 7

(0;∞)
10x — 20 > 30

(5;∞)
25x — 50 ≤ 25

(-∞;3]
4(x — 2) > 2(x + 2)

(6;∞)
10(x — 4) ≥ 8(x + 2)

[28;∞)
2(x — 3) > 4(x + 3)

(-∞;-9)
5(x — 2) ≤ 7(x — 3)

[5.5;∞)

2)
x(x — 5) > 0

(-∞;0)U(5;∞)
x(2x — 6) > 0

(-∞;0)U(3;∞)
(2x — 4)(3x + 3) > 0

(-∞;-1)U(2;∞)
(8x + 8)(4x — 4) < 0

(-1;1)
x(x + 2)(x — 5) ≤ 0

[-2;0]U[5:∞)
(x — 5)(x — 1)(x + 2) > 0

(-2;1)U(5;∞)
(2x — 4)(4x + 4)(5x + 20) > 0

(-4;-1)U(2;∞)

3)
(x — 4)/(x + 3) > 0

(-∞;-3)U(4;∞)
(x — 9)/(x + 2) ≥ 0

(-∞;-2)U[9;∞)
(x — 3)/(x + 8) > 0

(-∞;-8)U(3;∞)
(x + 3)/(x — 3) ≤ 0

[-3;3)

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