1、一、解方程。 5xx586x5x6 4x17.5x2x18.5x254335x x92x4.5x91.578 43x21918xx3.5x9 5x6x1x58x2 25 9x1x6x9.5x4x188 83x3x8x15y9.5y3y12y5y4.5y634x6x97y29y34x(3x6)8x5(x4)7 9 1bbb864x5(x9)35(x7)8 2 44(x4)6x3x2(2x5)92(x3)93(x8)34(17.5x)4(x1)9x 1 13(x2)4x2(x5)9y83y8 2 5x4 1x617x7.5x19 5 2 x3 4x16x23(x1)6x 2 32a(39a)-16
2、b(3b7)259x4(3x3)158y4(4y5)74(x5)8(x3)9x2(x3)4x7 7x7x6.5x12 3 85x6 8x25x6(x7) 6 92y3 9y455(71.5y)(4y9) 4 62y6 7y4 7y433(x2)8(x4) 2 6 125x5 3x84x8.5x11 2 72x9 3x95x2(x8) 6 12一、解方程。 7xx56x6x2 2x10.5x9x2.5x458637x x189x5.5x6248 47x52013xx4.5x18 3x7x74x39x7 45 5x4x7x9x2x184 4x3x6x19y2y7.5y186y2y2y175.5x6
3、x8y76y64x(8x3)5x2(x4)5 3 9bbb284x4(x2)74(x8)2 2 42(x3)4x6x3(3x8)74(x5)74(x3)62(98x)4(x9)5x 1 19(x2)2x7(x4)y28y5 2 5x3 3x322x6.5x7 3 6 x1 3x49x23(x5)6x 3 52a(69a)-22b(3b2)35x2(5x3)185y3(6y9)92(x4)6(x4)6x4(x7)9x1 4x72x3.5x8 4 56x2 8x75x2(x4) 6 93y7 9y832(32y)(2y3) 2 66y1 9y8 2y122(x2)6(x4) 2 8 105x7 7
4、x29x6.5x10 3 86x2 5x28x3(x6) 3 9一、解方程。 55xx58x3x5 8x6.5x9x1.5x458337x x17x6.5x9214 23x52019x3x0.5x9 1x3x74x88x2 29 3x3xx9x2x134 8x5x2x2y7.5y2.5y2y6y3y84x3x95y37y87x(5x6)4x3(x2)3 3 3bbb494x3(x8)24(x6)8 2 24(x8)4x3x4(5x1)74(x1)93(x2)56(43.5x)3(x9)3x 1 13(x1)3x9(x2)y39y8 4 4x1 3x33x0.5x4 5 3 x1 2x39x55
5、(x3)9x 4 49a(34a)-37b(6b9)167x2(3x4)188y3(1y4)53(x2)8(x6)3x4(x6)7x2 7x9x0.5x18 2 74x2 7x85x4(x3) 6 128y7 8y225(104y)(2y2) 2 65y7 9y3 8y214(x6)6(x4) 4 8 129x9 9x95x0.5x11 3 78x1 3x87x7(x2) 6 12一、解方程。 9xx197x4x4 26x7.5x3x18.5x104749x x10x5.5x6534 8x4920xx4.5x12 3x7x12x69x9 85 1x6xx5x7x158 8x5x4x310y6y
6、3.5y145.5y6y7.5y35x5x58y89y96x(9x1)8x3(x9)1 3 9bbb429x3(x7)13(x3)2 8 82(x7)9x4x2(3x1)22(x4)42(x1)94(76x)3(x7)2x 1 13(x3)5x3(x3)7y94y6 5 3x3 1x245x6.5x4 4 4 x2 2x16x42(x5)3x 2 56a(39a)13b(6b3)264x2(5x6)162y4(1y4)94(x4)6(x3)3x4(x8)6x6 9x2x0.5x7 4 63x5 8x28x8(x7) 6 129y1 9y134(71.5y)(1.5y1) 4 68y4 5y4 5y543(x5)8(x4) 4 6 108x2 8x79x0.5x20 4 83x6 9x66x3(x4) 3 9
