1. 4 + 2 * 5 = 23 * 2 / 5 = 46 / 5 = 7 + 5 * (15 - (2 + 4)) = 7 + 5 * (15 - 6) / 7 + 5 * 9 + 3 – 20 = 3.5 + 5.09 - 140 / 20 = 3.5 + 5.09 - 7 * 8.59 – 7 = 2.9 * (1.5 + 3.0 * 6.3) = 2.9 * (1.5 + 18.9) - 2.9 * 20.4 = 59.16

2. Si a = 10 b = 20 c = 30 a + b > c a - b < c a - b = c a * b < > c N1 N2 Expresión Resultado 3 6 3 < 6 0 1 0 > 1 4 2 4 = 2 8 5 8 <= 5 9 9 9 >= 9

3. a = 10 b = 12 c = 13 d =10 1) ((a > b)or(a < c)) and ((a = c) or (a > = b)) 2) ((a > = b) or (a < d)) and (( a > = d) and (c > d)) 3) not (a = c) and (c > b)