Question

(-2/5)×(-3/2)×(-1/4) =

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Answer 1

(-2/5) . (-3/2) . (-1/4)
6/10 . -1/4 = -6/40 = -3/20                      ok

Answer 2

$(- \frac{2}{5} )\cdot(- \frac{3}{2} )\cdot(- \frac{1}{4} )= \frac{(-2)\cdot(-3)\cdot(-1)}{5\cdot2\cdot4} =- \frac{6^{:2}}{40_{:2}} =- \frac{3}{20}$