简算3/4*19.73+72*7/4+8.27*175%
问题描述：
简算3/4*19.73+72*7/4+8.27*175%
答
解:原式=0.75X19.73+72X1.75+8.27X1.75=0.75X19.73+(72X0.75+72X1)+（8.27X0.75+8.27X1）=（8.27+19.73+72）x 0.75+72+8.27=100X0.75+80.27=75+80.27=155.27
答
7/4*19.73+72*7/4+8. 27*7/4-19.73
=（19.73+8.27+72）*7/4-19.73
=175-19.73
=155.27
答
3/4*19.73+72*7/4+8.27*175%
=3/4*19.73+7/4*(72+8.27)
=3/4*19.73+7/4*80.23
=3/4*19.73+(1+3/4)*80.23
=3/4*(19.73+80.23)+80.23
=3/4*100+80.23
=75+80.23
=155.23