七年级数学上册解方程专项练习 300.docx

1、七年级数学上册解方程专项练习 300y40.1x0.72.215x7(x1)3(x4)163x2(17x)3(100x)(400x)20014x279x192xx14(5x)5(x8)5(3x5)4x93/2(x10)(9x8)x310.8x0.56.825x2(x4)8(x3)142x4(11x)7(200x)(600x)30017x357x162xx103(5x)4(x7)5(3x1)2x5(x4)(2x10)x130.3x0.13.328x7(x9)2(x9)195x3(12x)5(100x)(400x)30017x258x252xx112(4x)3(x4)4(4x3)2x5(x10)(

2、7x8)4y30.5x0.82.117x4(x1)5(x4)145x3(14x)8(300x)(500x)30010x398x262xx165(5x)4(x8)3(3x5)3x7(x6)(3x7)3/2x430.9x0.72.919x3(x6)8(x8)184x2(15x)6(200x)(600x)30019x348x163xx132(5x)3(x1)3(3x4)4x8(x4)(9x10)x140.8x0.8716x6(x8)9(x6)106x2(19x)5(300x)(400x)10017x236x179xx24(4x)3(x10)2(3x5)4x5(x2)(8x7)x1y10.1x0.62

3、.516x5(x4)8(x1)102x2(19x)6(200x)(500x)10015x352x167xx142(4x)5(x4)5(3x1)3x7(x4)(2x2)x160.2x0.8714x8(x8)5(x5)194x4(19x)5(200x)(500x)10017x255x306xx164(6x)5(x1)2(4x5)4x73/2(x10)(3x2)3/2x1y10.8x0.62.212x5(x6)4(x2)136x4(20x)5(300x)(500x)10015x404x178xx152(6x)5(x3)4(2x5)4x73/2(x4)(2x4)x3y40.4x0.1323x5(x7)4(x1)112x2(17x)2(100x)(500x)40014x405x23