(1)(+9 1/2)+(-3 3/7)+8 1/2+(+3/7)
问题描述:
(1)(+9 1/2)+(-3 3/7)+8 1/2+(+3/7)
(2)(+4.25)+(-5 4/11)-(+2.75)-(+6 5/11)+7 3/4-1 1/4
就这些 尽快回答哈
答
1.(+9 1/2)+8 1/2+(+3/7)+(-3 3/7)=5-30/7=5/7
2.(+4.25)-(+2.75)+(-5 4/11)-(+6 5/11)+7 3/4-1 1/4
=1.5-(10-1/11)+62/4=1.5-10+1/11+15.5=78/11