小红看了一本160也的书,一看的页数是未看的五分只三,已看和未知的各多少页
\u5c0f\u7ea2\u770b\u4e00\u672c\u6545\u4e8b\u4e66\uff0c\u5df2\u7ecf\u770b\u7684\u9875\u6570\u4e0e\u5269\u4e0b\u7684\u9875\u6570\u6bd4\u662f2\u6bd43\uff0c\u5c0f\u7ea2\u7684\u670b\u53cb\u901a\u8fc7\u8ba1\u7b97\u53d1\u73b0\u5c0f\u7ea2\u770b\u7684\u9875\u6570\u6bd4\u8fd9\u672c\u4e66\u603b\u9875\u5728\u505a\u8fd9\u9053\u9898\u4e4b\u524d\uff0c\u6211\u4eec\u9996\u5148\u8981\u641e\u61c2\u9898\u76ee\u7684\u610f\u601d\u3002
\u9898\u76ee\u4e2d\u8bf4\uff1a\u201c\u5df2\u7ecf\u770b\u7684\u9875\u6570\u4e0e\u5269\u4e0b\u7684\u9875\u6570\u6bd4\u662f2\u6bd43\u201d\uff0c\u4ece\u8fd9\u53e5\u8bdd\u6211\u4eec\u5c31\u53ef\u4ee5\u770b\u51fa\uff0c\u5df2\u770b\u7684\u9875\u6570\u5360\u603b\u9875\u6570\u76842|\uff082+3\uff09=2|5\u3002\u8fd9\u6837\uff0c\u8fd9\u9053\u9898\u5c31\u597d\u505a\u4e86\u3002
\u8fd9\u9053\u9898\u6211\u4eec\u53ef\u4ee5\u7528\u65b9\u7a0b\u548c\u7b97\u5f0f\u6765\u89e3\u3002
\u65b9\u7a0b\uff1a\u89e3\uff1a\u8bbe\u8fd9\u672c\u4e66\u4e00\u5171\u6709x\u9875\uff0c\u90a3\u4e48\u5df2\u770b\u5b8c\u7684\u9875\u6570\u5c31\u662f2|5x\uff0c\u5219\u53ef\u5217\u65b9\u7a0b\uff1a
2|5x=3|4x-28.\u7b49\u5f0f\u7684\u4e24\u8fb9\u540c\u65f6\u4e58\u4ee520\uff0c\u5f97\uff1a
8x=15-560.\u79fb\u9879\uff0c\u5f97\uff1a
560=7x\u3002\u7cfb\u6570\u5316\u4e3a\u4e00\uff0c\u5f97\uff1a
x=80
\u7b54\uff1a\u8fd9\u672c\u4e66\u5171\u670980\u9875\u3002
\u7b97\u5f0f\uff1a28\u00f7\uff083|4-2|5\uff09
=28\u00f77|20
=28\u00d720|7
=80\uff08\u9875\uff09
\u7b54\uff1a\u8fd9\u672c\u4e66\u5171\u670980\u9875\u3002
\u5e94\u8be5\u5c31\u662f\u8fd9\u6837\u4e86\uff0c\u5e0c\u671b\u6211\u7684\u56de\u7b54\u80fd\u7ed9\u4f60\u5e26\u6765\u4e00\u4e9b\u5e2e\u52a9\uff0c\u795d\u4f60\u5b66\u4e60\u8fdb\u6b65\uff01\uff01
\u5df2\u7ecf\u8bfb\u9875\u6570\u548c\u672a\u77e5\u8bfb\u9875\u6570\u7684\u6bd4\u662f3:2\uff0c\u5df2\u8bfb\u7684\u5360\u603b\u91cf\u76843/(2+3)=3/5
\u672a\u77e5\u9875\u6570\u662f\u5df2\u8bfb\u9875\u6570\u76847\u5206\u4e4b3,\u5219\u672a\u8bfb\u7684\u5360\u603b\u91cf\u7684(3/7)/(1+3/7)=3/10,\u5219\u5df2\u8bfb\u7684\u53607/10
\u5171\u6709:30/(7/10-3/5)=300\u9875
未看的160÷（1+3/5）
=160÷8/5
=100页
已看的160-100=60页
绛旓細宸茬湅鐨160-100=60椤
绛旓細160*2/5=64椤 160*3/8=50椤 160-(64+50锛=46椤
绛旓細160-锛160/4+160/5锛=88
绛旓細杩欐牱璁＄畻锛0.375梅160鈮0.002343 灏忕孩鐪嬩竴鏈功160椤碉紝绗竴澶╃湅浜嗗叏涔︾殑99.997656锛岀浜屽ぉ鐪嬩簡鍏ㄤ功鐨0.375椤碉紝杩樺墿浜0椤点
绛旓細160脳锛1-2/5-3/8锛 =160脳9/40 =36锛堥〉锛
绛旓細鍋囪姣忓ぉ鐪媂椤碉紝4澶鐪嬩簡4X 鍓╀笅鐨勬瘮宸鐪嬬殑灏40椤碉細4X-40 鍓╀笅鐨+宸茬湅鐨=160 鍒楀紡濡備笅锛4X+(4X-40)=160 8X-40=160 8X=200 X=25 鏁呭钩鍧囨瘡澶╃湅25椤
绛旓細瑙ｇ敱棰樼煡鍓╀笅鐨(160-40)梅2=60椤 鍒鐪嬩簡160-60=100椤 鍒欏钩鍧囨瘡澶╃湅100梅4=25椤点
绛旓細160-160*25%-160*3/8=160-40-60=100(杩樻湁100娌＄湅锛
绛旓細绗簩澶╀粠绗嚑椤电湅璧凤細160脳 1 4 +1锛=40+1锛=41锛堥〉锛夛紟绛旓細绗簩澶╀粠绗41椤佃璧凤紟鏁呴塁锛
绛旓細褰撶劧锛屽鏋滆繖棰樻槸鎬ヨ浆寮殑璇濓紝閭ｉ殢渚夸粠閭ｄ竴椤电湅閮芥槸鍙互鐨勶紝鍥犱负棰樼洰娌℃湁璇存寜椤哄簭浠庣涓椤靛紑濮嬬湅鍢涖傜涓澶╃湅20椤碉紝绗簩鑷崇浜斿ぉ锛屽叡鍥涘ぉ鐪嬩簡15涔樹互4绛変簬60椤碉紝鍗冲墠浜斿ぉ鐪嬫潵20鍔60绛変簬80椤碉紝閭ｄ箞绗叚澶╁簲璇ヤ粠绗81椤靛紑濮嬬湅銆傚綋鐒讹紝濡傛灉杩欓鏄ヨ浆寮殑璇濓紝閭ｉ殢渚夸粠閭ｄ竴椤电湅閮芥槸鍙互鐨勶紝鍥犱负...
