2 i 2/5 *4 i 6/11 * 3 i 5/13 * (-1/4)=
12/5 * 50/11 * 44/13 * (-1/4) =
120/11 * (-11/13) = -120/13 = - 9 i 3/13
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2 i 2/5 *4 i 6/11 * 3 i 5/13 * (-1/4)=
12/5 * 50/11 * 44/13 * (-1/4) =
120/11 * (-11/13) = -120/13 = - 9 i 3/13