一：5.5 0 268 9 0.02 11.4 2.3 558 6.12 9.02 横的排 二:0 4 3 3 1 11:122:98 58 980 82 84三：6a+13a 6x-28-2.5x+30.5 8a-(5a+8a) (5x+7-(4x+0.18)=19a =3.5x+2.5 =3a+8a =1x+7.18