简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+5/6)*6/5简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+6/5)*5/6

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/22 13:42:23

简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+5/6)*6/5简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+6/5)*5/6
简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+5/6)*6/5
简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+6/5)*5/6

简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+5/6)*6/5简便计算(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+6/5)*5/6
最终答案是137.9

30*2/3-1/2*2/3+40*3/4-2/3*3/4+50*4/5-3/4*4/5+60*5/6-4/5*5/6
20-1/3+30-1/2+40-3/5+50-2/3

(28+3/2)*2/3+(38+4/3)*3/4+(48+5/4)*4/5+(58+6/5)*5/6
= (30 - 1/2)*2/3 + (40 - 2/3)*3/4 + (50 - 3/4)*4/5 + (60 - 4/5)*5/6
= 20+30+40+50 - (1/3+2/4+3/5+4/6)
= 140 - 2 - 1/10
= 137+9/10