1、一、解方程。 1xx57x5x7 22x2.5x8x2.5x454349x x88x1.5x9558 4x6419xx5.5x15 5x5x9x27x7 49 1x3x2x6.5x2x124 419x3x3x6y4y2y6y1.5y8y105x3x5y94y65x(6x1)8x4(x1)1 7 1bbb823x3(x6)74(x4)4 4 44(x7)6x4x3(3x6)65(x6)84(x10)84(72.5x)2(x7)7x 1 16(x1)4x8(x2)y54y5 5 2x1 1x64x0.5x11 5 4 x1 2x27x54(x9)9x 2 43a(36a)25b(3b3)224x4
2、(4x9)114y3(1y4)24(x2)8(x1)9x5(x1)2x6 9x54x0.5x19 2 58x4 2x26x9(x5) 6 129y7 9y322(13.5y)(3.5y8) 4 83y5 7y7 7y952(x5)7(x6) 2 6 128x1 7x6x4.5x9 2 88x2 8x82x6(x8) 6 12一、解方程。 56xx58x6x7 2x4.5x5x7.5x2510855x x6x6.5x5182 28x71910xx8.5x15 1x6x72x86x7 43 3x3xx2x6x148 813x2x9x12y4y7.5y197y1.5y9y64x6x84y27y65x
3、(9x4)8x3(x5)5 5 3bbb283x4(x2)25(x9)2 4 45(x6)6x6x4(5x7)63(x6)74(x6)38(14x)5(x7)9x 1 12(x4)6x5(x1)4y56y3 6 3x2 1x614x2.5x2 5 5 x1 3x14x12(x6)2x 2 36a(68a)04b(6b9)256x2(2x2)183y4(3y8)73(x2)6(x1)8x6(x2)9x9 8x6x7.5x2 2 84x5 7x16x4(x6) 3 96y2 7y743(92y)(2y1) 4 84y6 3y7 2y524(x4)8(x1) 4 8 107x6 7x46x5.5x1
4、3 2 72x8 7x32x6(x7) 3 12一、解方程。 15xx26x7x4 8x14.5x7x9.5x154729x x209x8.5x9432 4x8514x2x6.5x9 5x5x6x37x8 49 1x5xx4x4x122 4x6x4x10y1.5y2.5y15y6y10y473x3x74y57y28x(3x3)4x5(x5)5 1 9bbb884x3(x2)92(x6)8 4 44(x7)4x2x3(5x4)63(x2)82(x10)32(46x)4(x5)4x 1 15(x1)4x8(x9)y75y6 2 6x3 2x64x5.5x5 4 5 x2 4x44x44(x6)8x
5、 5 27a(59a)53b(4b7)308x2(2x8)123y4(2y7)74(x3)7(x6)2x4(x8)6x1 3x2x8.5x12 3 53x1 9x27x7(x3) 6 93y2 5y815(84y)(1.5y7) 4 88y2 5y7 7y844(x3)6(x1) 4 8 102x2 8x1x5.5x9 3 65x2 7x32x3(x2) 6 12一、解方程。 3xx476x2x6 87x14.5x9x15.5x306813x x138x2.5x9278 8x9415xx7.5x11 1x5x3x26x6 27 5x9x6x5.5x5x164 2x3x2x14y1.5y5y19
6、y8y5y55.59x6x5y36y78x(7x1)4x3(x5)7 9 3bbb483x4(x1)63(x6)8 4 44(x6)6x6x2(5x1)52(x3)84(x6)58(47x)4(x4)7x 1 18(x5)3x4(x9)y43y3 5 6x3 4x45x7.5x14 2 5 x1 2x15x33(x9)4x 6 52a(22a)-17b(5b9)197x4(2x4)25y4(3y9)42(x2)5(x4)8x5(x4)2x7 8x99x4.5x10 2 68x7 6x49x7(x7) 3 123y9 7y714(13y)(3.5y7) 4 68y6 9y6 9y824(x4)7(x4) 4 6 109x4 3x56x9.5x7 3 62x1 2x83x3(x9) 6 12
