作业帮1/4*（4.85除以5/18-3.6+6.15*3又3/5）—[1.75*（1又3/2+19/21）-5.5]
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/04 18:48:15
![1/4*（4.85除以5/18-3.6+6.15*3又3/5）—[1.75*（1又3/2+19/21）-5.5]](/uploads/image/z/12027-3-7.jpg?t=1%2F4%2A%EF%BC%884.85%E9%99%A4%E4%BB%A55%2F18-3.6%2B6.15%2A3%E5%8F%883%2F5%EF%BC%89%E2%80%94%5B1.75%2A%EF%BC%881%E5%8F%883%2F2%2B19%2F21%EF%BC%89-5.5%5D)
1/4*（4.85除以5/18-3.6+6.15*3又3/5）—[1.75*（1又3/2+19/21）-5.5]
1/4*（4.85除以5/18-3.6+6.15*3又3/5）—[1.75*（1又3/2+19/21）-5.5]
1/4*（4.85除以5/18-3.6+6.15*3又3/5）—[1.75*（1又3/2+19/21）-5.5]
观察到5/18,3.6和3+3/5的关系了吗?除以5/18就等于乘以18/5=3.6=3+3/5,所以原式=1/4´3.6´（4.85-1+6.15）（提取公因数）+（5.5-7/4´18/7）=9+1=10.
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