NET.\r3 :J K :\r£¤¥\rLMN OP\rQRS\r30-u 0 1 2 3 4 5 6 7 8\r¦m §¨©p^*J 25p) *J 5 pqJ 25p)\r3 1 7 40-50=3\r3 1 - 2 ,*50- 4 0 q-40=1\r31-3, 650-40q- 50=4\r3T4*50-40)- *50-40)= 1\r3 :UVWXYZA[D% : = =6 : 5\rU ? \ A :2200/ =2200x A =1200*^\r6 + 5 11\rV? ms 22007 r =2200x A =1000*^\r6 + 5 11\r3 2 1 = :U?\1200^ ,V?\1000^.\rH 1 5 I J 1 6 I.\r??x , ?x + 15.\rx _ 1\r7 4 5 - 3\r3x = x + 15\r3x-x = x - x + 15\r2x = 15\rx = 7.5\rx+15 = 7.5 + 15 = 22.5\r33-1 >\r?(50x20x30-3000)+180\r=(30000-3000) +180\r=27000+180\r= 150( )\r34-1 ?155 !"#$.\r35-\r&'1()*\r35-2 &+2(),\r35-3T I -./0123456789\rH 1 6 I J 1 6 I
全文预览