[1 又1/24-(3/8+1/6-3/4)×24]÷(-5)
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[1 又1/24-(3/8+1/6-3/4)×24]÷(-5)
[1 又1/24-(3/8+1/6-3/4)×24]÷(-5)
[1 又1/24-(3/8+1/6-3/4)×24]÷(-5)
[1 又1/24-(3/8+1/6-3/4)×24]÷(-5)=[25/24+5]×(-1/5)=25/24×(-1/5)+5×(-1/5)=-5/24-1=-29/24