Respuesta :

Answer

1. x + 19.3 ≤ 72.8

Grouping of the terms will yield

x ≤ 72.8 - 19.3

x ≤ 53.5

2. 41.78 < 2x

Divide both sides by 2

41.78/2 < 2x/2

20.89 < x

x > 20.89

3. 7.5x ≥ 25.5

Divide both sides by 7.5

7.5x/7.5 ≥ 25.5/7.5

x ≥ 3.4

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