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10(20 - x) < 8(2x - 1)
200 - 10x < 16x - 8
200 + 8 < 16x + 10x
208 < 16x
208/16 < x
13 < x
x > 13
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13
Solucion
(13, infinito)
10(20 -X) < 8 (2X - 1)
200 - 10X < 16X -8
200 + 8 < 16X + 10X
208 < 26X
208/26 < X
8 < X
por lo tanto X>8