90\r500jÏ:1.8hw\r500j?:1800,??\r=500-1800\r5\r"18\r¢.®Ð@\n7?@\r24.?P?P«x?ÑÒÓ\ÔÅ,\r3.2x=3.6x2\r3.2x=7.2\rx=2.25\r2.25?ÑÒÓ\ÔÅ\r25.?P?P250+72x5\r=2504-5x7\r=350?ÕÖ\rH×ØÆ?ÙÚ350ÕÖ\rm11n/p13nEvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r735\r26.?P?P2.54-(-----)x----\r7+587+5\r?55\r2412\r=5(ÛÜ)\rÝÞßà;F'@5ÛÜ\r27.?P?P420+(3--q)\r42+3\r32\r=420^(---)\r7\r=420+q\r20\r=1200(Ö)\râãsäåP@1200Ö\r28\r?P?P«Ëæç;1<=>i2x,èæç;1<=>i3x,:\r2xx(3+6)+3xx6=0\r18x+18x=-\r3\r36x=-\r3\r36x+36=q+36\r3\r1\rx=---\r108\rèæç;1<=>iqx3=q\r10836\rUq=36(9)\r36\râêëìèæç345É8369í,6\r29\r?P?P«É8MÈxÇ@î\r6x6xx=64x90\r36x=5760\rx=160\rÉ8MÈ160Ç\r30.?P?P(1)Yï@?ã¾VJK½Ý^#$%\rm12n/p13nEvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r(2)\rX12.51015\ry2050200300\rm13n/p13n