2/5x-2 < 0
2/5x<2
x<2:2/5
x<2*5/2
x<5
0,4x - 2 < 0
0,4x < 2
x < 2 : 0,4
x < 5
Ответ: x ∈ (-∞; 5)
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Verified answer
2/5x-2 < 0
2/5x<2
x<2:2/5
x<2*5/2
x<5
Verified answer
0,4x - 2 < 0
0,4x < 2
x < 2 : 0,4
x < 5
Ответ: x ∈ (-∞; 5)