2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5}
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 16:41:39
![2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5}](/uploads/image/z/3741954-42-4.jpg?t=2%E5%8F%883%2F4-%7B5%E5%8F%881%2F4-%E3%80%900.04-%281%E5%8F%885%2F8-2%E5%8F%881%2F5%29-0.1%E3%80%91%2B1%2F5%7D)
2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5}
2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5}
2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5}
2又3/4-{5又1/4-【0.04-(1又5/8-2又1/5)-0.1】+1/5}
=2又3/4-5又1/4+【0.04-(1又5/8-2又1/5)-0.1】-1/5
=(2又3/4-5又1/4)+0.04-(1又5/8-2又1/5)-0.1+1/5
=-2又1/2+0.04-1又5/8+2又1/5-0.1+1/5
=(-2又1/2-1又5/8)+(0.04-0.1)+(2又1/5+1/5)
=-4又1/8-0.06+2又2/5
=-4.125-0.06+2.4
=-1.785