3 1.4320.43 4 + 32 0.80.40.8 55 + 441 (2) 7 532 + 00 3(1)9 50x= x 571 62 E D C B A 姓名 班级_ 座位号 装订线内不要答题 ABCDEC ABCDEC 4 9 00 20 00 25 0 0 33.3 a (3)3x+33x +33x ac adbc bd = 32 11 32 = 5 5 6 0 5 6 1296 00 10 00 10 1 15 3 1.4320.43 4 + 32 0.80.40.8 55 + 3 3 4 441 (2) 7 532 + 00 3(1)9 50x= x 5 2 x = (9400300200)33100+= 31003003400+= 31002002900= 15 151=16200.8= 320.8160=