Respostas

2014-08-31T21:36:31-03:00
P.⅓ = D
(P⅓ + P) + 4 = 60
⅓P + P = 60 - 4
⅓P + P = 56
P + 3P = 168
4P = 168
P = 168/4
P = 42
⅓.42 = D
D = 14
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