Explicación paso a paso:
1.- x > 47 -35
x > 12 c.s <12, ∞+>
2.- x ≤ 10 + 28
x ≤ 38 c.s <-∞, 38]
3.- 5x < 50 +20
x < 70/5
x < 14 c.s <-∞, 14>
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Explicación paso a paso:
1.- x > 47 -35
x > 12 c.s <12, ∞+>
2.- x ≤ 10 + 28
x ≤ 38 c.s <-∞, 38]
3.- 5x < 50 +20
x < 70/5
x < 14 c.s <-∞, 14>