Réponses

2014-01-10T20:26:00+01:00
R(28) / R(14) = R(2)*R(14) / R14 = R(2)

R(12) / R(2) = R(2*6) / R(2) = R(2) * R(6) / R(2) = R(6) = R(2*3) = R(2) * R(3)

R(15) / R(10) = R(3*5) / R(2*5) = R(3)*R(5) / ( R(2) * R(5) ) = R(3) / R(2)

R(4/5) = R(4) / R(5) = 2 / R(5)