Realice los siguientes ejercicios de Proporciones a) 1/16 = 7/x
b) 1/3 = x/9
c) 2/5 = x/15
d) 6/9 = 5/x
e) 78/9 = 39/x
Ayuda pliss estoy en examen :(

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Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b. false