(+17又3/4)-(6.25)-(-8又1/2)-(+0.75)-22又1/4

问题描述:

(+17又3/4)-(6.25)-(-8又1/2)-(+0.75)-22又1/4

原式=17+0.75-6.25+8+0.5-0.75-22-0.25
=17-6+8-22
=19-22
=-3