(-1-1)÷2×1/2-(-15.625)÷9/25×(-3/5)

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(-1-1)÷2×1/岁态2-(-15.625)÷9/25×(-3/5)
=-2÷2÷2-125/让御8×25/坦雀岩9×3/5
=-1/2-625/24
=-637/24

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(-1-1)÷2×1/2-(-15.625)÷9/25×(-3/5)
=-1/2-15.625*25/芹游9*(-3/春首宏5)
=-1/扒册2+26.041=25.54

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