1、七年级数学上册解方程专项练习 268xx165(4x)3(x6)2(2x1)4x5(x2)(9x6)4y30.3x0.33.815x9(x6)2(x5)104x5(13x)3(100x)(600x)40019x257x226xx102(5x)3(x10)5(4x4)2x5(x2)(4x7)3/2x210.4x0.23.421x5(x1)3(x7)163x2(18x)1(300x)(500x)20020x244x203xx85(6x)2(x6)5(3x3)4x7(x8)(2x5)x350.2x0.23.519x8(x7)2(x9)165x5(12x)6(200x)(400x)30017x337x
2、218xx154(6x)5(x5)4(4x1)3x8(x4)(7x7)x3y30.3x0.95.829x5(x2)8(x4)114x2(20x)2(200x)(600x)10019x229x268xx85(5x)4(x9)3(4x1)3x6(x10)(2x10)x340.3x0.42.914x8(x8)8(x7)156x3(19x)7(100x)(600x)40015x232x232xx85(3x)2(x4)5(3x3)2x6(x6)(7x5)x330.9x0.65.122x7(x2)3(x7)195x5(17x)5(100x)(500x)40014x342x257xx113(4x)3(x4)
3、3(4x4)4x6(x8)(4x8)x150.4x0.11.825x6(x8)6(x1)153x2(11x)3(300x)(600x)40012x386x253xx132(3x)3(x10)2(3x5)2x5(x2)(8x2)x360.3x0.12.718x6(x4)9(x2)176x2(16x)4(100x)(400x)40013x259x172xx134(3x)2(x6)4(4x1)3x8(x6)(7x8)x230.7x0.95.224x5(x3)3(x3)142x4(19x)4(300x)(600x)20019x348x306xx24(5x)4(x2)2(2x1)4x9(x4)(6x3)1y1