作业帮1.8x[6又5/12除以16+(9-2又7/12)]除以2又3/4
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/05 18:31:20
![1.8x[6又5/12除以16+(9-2又7/12)]除以2又3/4](/uploads/image/z/186076-28-6.jpg?t=1.8x%5B6%E5%8F%885%2F12%E9%99%A4%E4%BB%A516%2B%289-2%E5%8F%887%2F12%29%5D%E9%99%A4%E4%BB%A52%E5%8F%883%2F4)
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1.8x[6又5/12除以16+(9-2又7/12)]除以2又3/4
1.8x[6又5/12除以16+(9-2又7/12)]除以2又3/4
1.8x[6又5/12除以16+(9-2又7/12)]除以2又3/4
1.8×[6又5/12÷16+(9-2又7/12)]÷2又3/4
原式=1.8×[6又5/12÷16+(8又12/12-2又7/12)]÷2又3/4
=1.8×（6又5/12÷16+6又5/12）÷2又3/4
=1.8×（6又5/12×1/16+6又5/12×1）÷2又3/4
=1.8×6又5/12×（1/16+1）÷2又3/4
=1又4/5×6又5/12×17/16×4/11
=9/5×77/12×17/16×4/11
=357/80