Respuestas

2014-01-18T14:28:52+01:00

(2 + 3) + 5 = 10
(5 + 3) + 2 = 10

(-3 + 4) + 5 = 6
(4 + 5) – 3 = 6

(7 + 8) + 15 = 30
(8 + 15) + 7 = 30

(5 + 7) + (-2 + 8) = 18
(5 + 8) + (-2 + 7) = 18

(23 + 95) + 35 = 153
(35 + 23) + 95 = 153