1/6×(6.75÷5/12-2.4+41/4×22/5)-11/8-0.875.

问题描述:

1
6
×(6.75÷
5
12
-2.4+4
1
4
×2
2
5
)-1
1
8
-0.875.

1
6
×(6.75÷
5
12
-2.4+4
1
4
×2
2
5
)-1
1
8
-0.875
=
1
6
×(6.75×2.4-2.4+4
1
4
×2.4)-(1
1
8
-0.875)
=
1
6
×24(6.75-1+4.25)-2
=
1
6
×24×10-2
=40-2
=38.