作业帮(-15 2/3)-[(-13 2/3)+(-31 2/5)+(+14)]1.-3/4+7/6+1/3-1/22.(+3 3/5)-(-4 3/4)-(+1 3/5)+(-3 3/4)3.4.7-(-8.9)-7.5+(-6)
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/02 20:15:25
![(-15 2/3)-[(-13 2/3)+(-31 2/5)+(+14)]1.-3/4+7/6+1/3-1/22.(+3 3/5)-(-4 3/4)-(+1 3/5)+(-3 3/4)3.4.7-(-8.9)-7.5+(-6)](/uploads/image/z/1008583-7-3.jpg?t=%28-15+2%2F3%29-%5B%28-13+2%2F3%29%2B%28-31+2%2F5%29%2B%28%2B14%29%5D1.-3%2F4%2B7%2F6%2B1%2F3-1%2F22.%28%2B3+3%2F5%29-%28-4+3%2F4%29-%28%2B1+3%2F5%29%2B%28-3+3%2F4%293.4.7-%28-8.9%29-7.5%2B%28-6%29)
(-15 2/3)-[(-13 2/3)+(-31 2/5)+(+14)]1.-3/4+7/6+1/3-1/22.(+3 3/5)-(-4 3/4)-(+1 3/5)+(-3 3/4)3.4.7-(-8.9)-7.5+(-6)
(-15 2/3)-[(-13 2/3)+(-31 2/5)+(+14)]
1.-3/4+7/6+1/3-1/2
2.(+3 3/5)-(-4 3/4)-(+1 3/5)+(-3 3/4)
3.4.7-(-8.9)-7.5+(-6)
(-15 2/3)-[(-13 2/3)+(-31 2/5)+(+14)]1.-3/4+7/6+1/3-1/22.(+3 3/5)-(-4 3/4)-(+1 3/5)+(-3 3/4)3.4.7-(-8.9)-7.5+(-6)
这个是什么阶段的题目哇
我记得我是在初一的时候才接触 分数的
1.-9/12+14/12+4/12-6/12=3/12=4
2.(3 3/5）=(3*5+3)/5=18/5 ...累死我了
不算了.
3.4.7+8.9-7.5+6=12.1
算错了不要怪我