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4R -8/5 = 1 - 2R
4R+2R = 1 + 8/5
6R = 13/5
R = (13/5)/6
R = 13/30
2 - T/3 = T/6
2 = T/6 + T/3
2 = (T + 2T) / 6
2 = 3T/6
12 = 3T
T = 4
E. Ninguna de las anteriores
4R-2=5-10R 12-6T=3T
14R=7 12=9T
R=1/2 4/3=T