[2-(8.25-5 1/4)*2/3]/ 9/10+ 1/10

问题描述:

[2-(8.25-5 1/4)*2/3]/ 9/10+ 1/10

[2-(8.25-5 1/4)*2/3]/ 9/10+ 1/10
=[2-(8+1/4-5-1/4)*2/3]/ 9/10+ 1/10
=[2-3*2/3]/ 9/10+ 1/10
=0+1/10
=1/10