|x| = x, x >= 0
-x, x<0
|3 - 5x| x > 3/5 5x - 3
x<=3/5 3 - 5x
-3|3 - 5x| = -3(5x - 3) = 9 - 15x при 3-5x<0
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|x| = x, x >= 0
-x, x<0
|3 - 5x| x > 3/5 5x - 3
x<=3/5 3 - 5x
-3|3 - 5x| = -3(5x - 3) = 9 - 15x при 3-5x<0