1/3-1/2-1/4+2/3

来源：学生作业帮助网编辑：作业帮时间：2024/11/17 08:32:16

1/3-1/2-1/4+2/3
1/3-1/2-1/4+2/3

1/3-1/2-1/4+2/3
1/3-1/2-1/4+2/3=1/4

等于四分之一

=(1/3+2/3)-(1/2+1/4)
=1-3/4
=1/4

7/12

1/3-1/2-1/4+2/3
=1/3+2/3-1/2-1/4
=1-3/4
=1/4

1/4

1+2+3+4+1 1 2 3 4 1 2 3 4 1 2 3 4 1,2,3,4, 1 2 3 4 1 2 3 4 1,2,3,4, 1,2,3,4, 1,2,3,4, 1,2,3,4, 1 2 3 4 1,2,3,4, 1,2,3,4, 1,2,3,4, 1、2、3、4 1+2+3×4 1,2,3,4