小升初数学衔接专题一负数

1 ¨ x + 3 = 3x.\r5:VW1œ'`( )\r(A)3x ¨2 = 2x + l , âãu 3x-2x = -l + 2;\r(B)3 - * = 2-5(*-1),råæu3-x = 2-5x ¨ l;\r2 3\r(C)  ?   <  D @ 1,u x = l;\r3 2\r(D)ç4è Æ = 1 DF3X = 6.\r0.2 0.5\r6:¼'3éÕê'ëì2 , ~í¼@y ,  W   @ ..\r7† î = m s?4x + 2 ï3x-9'¥ð@ñò.\r8:ó?s = + 6)õ;s = 16,= 3,/? = 4 , ø = ,\r9:–\rx -- (3 ¨ 2x) = 1 ? x ? ¨ x + 1\r5 2 5\r1 9x-2\r5 ¨ 3x = 8x +1 - x - -2 =0\r2 6\r10:ùá x = , `© Æ % - - = àÆ” 'Œ•s?- (-4n2 + 2m-8)-f-m-l\r2 4 2 3 4' ' (2\r'¥.