3.75-(-1/2)-(+4又2/3)+(-1/2)+(-6又3/4)

3.75-(-1/2)-(+4又2/3)+(-1/2)+(-6又3/4)
3.75-(-1/2)-(+4又2/3)+(-1/2)+(-6又3/4)

3.75-(-1/2)-(+4又2/3)+(-1/2)+(-6又3/4)
3.75-(-1/2)-(+4又2/3)+(-1/2)+(-6又3/4)
=3.75-6又3/4+1/2-1/2-4又2/3
=-3+0-4又2/3
=-7又2/3

楼下的做错了哦!
3.75-(-1/2)+(-4又2/3）+（-0.5）+（-6又3/4）
=3.75+0.5-14/3-0.5-6.75
=3.75-6.75+0.5-0.5-3/14
=-3-3/14
=-42/14-3/14
=-45/14
不懂的欢迎追问，如有帮助请采纳，谢谢!

3.75-(-1/2)-(+4又2/3)+(-1/2)+(-6又3/4)
=3又3/4-4又2/3-6又3/4
=3-4-6+3/4-2/3-3/4
=-23/3