(-0.25)x(-2)x(-5/12)x(+0.8)

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(-0.25)x(-2)x(-5/12)x(+0.8)(-0.25)x(-2)x(-5/12)x(+0.8)(-0.25)x(-2)x(-5/12)x(+0.8)(-0.25)×(-2)×(-5/12

(-0.25)x(-2)x(-5/12)x(+0.8)
(-0.25)x(-2)x(-5/12)x(+0.8)

(-0.25)x(-2)x(-5/12)x(+0.8)
(-0.25)×(-2)×(-5/12)×(+0.8)
=(-1/4)×(-2)×(-5/12)×4/5
=-(1/4×2×5/12×4/5)
=-(1/4×4/5)×(2×5/12)
=-1/5×5/6
=-1/6