(7/9-5/6+17/18)18+1.458-3.95*8

来源：学生作业帮助网编辑：作业帮时间：2024/05/03 15:51:44

(7/9-5/6+17/18)*18+1.45*8-3.95*8
(7/9-5/6+17/18)*18+1.45*8-3.95*8

(7/9-5/6+17/18)*18+1.45*8-3.95*8
(7/9-5/6+17/18)*18+1.45*8-3.95*8
=7/9*18-5/6*18+17/18*18+8*(1.45-3.95)
=14-15+17-8*2.5
=16-20
=-4

(7/9-5/6+17/18)*18+1.45*8-3.95*8
=（7/9)*18-（5/6)*18+（17/18)*18+（1.45-3.95）*8
=14 - 15+17-2.5*8
=16-20
=-4