1、七年级数学上册一元一次方程100一、解方程。 9 xx18 2x9x5 8 7x8.5x4x16.5x20214 9x x 14 x2.5x50.534 2 x4416x 4x6.5x7 3 x1x1 2x98x6 8 5 7 x5x x5x9x158 2 x6x6x4 y1.5y3.5y17 6.5y7y1.5y149 5x5x7 y43y3 6x(9x7)2x5(x5) 9 1 1 bbb87 9x3(x8)94(x4)2 8 4 4(x7)2x 2x4(4x7)13(x2) 23(x8)74(52x) 2(x6)3x 1 1 3(x1)3x9(x2) 7y83y7 2 6 x4 4x 2
2、5 9x0.5x18 4 6 x2 2x1 2x3 3(x4)5x 3 5 2a(13a)3 2b(5b9)12 2x3(2x5)9 3y3(4y5)9 2(x5)8(x1) 4x3(x6) 3x4 9x6 6x7.5x2 3 5 4x4 6x8 9x5(x9) 6 9 6y4 9y6 1 5(12y)(4y9) 4 8 4y6 5y8 3y8 3 4(x4)7(x1) 4 6 12 4x8 3x3 x6.5x5 4 5 2x4 6x3 9x6(x4) 3 12 一、解方程。 3 xx17 x3x8 4 x10.5x8x14.5x25282 7x x 6 x2.5x7598 8 x2211x
3、x6.5x10 5 x2x2 2x49x5 2 9 5 x9x x1x3x132 4 8x2x2x6 y5.5y9y12 y3.5y8y202 x6x3 6y33y4 6x(9x9)4x5(x2) 7 1 9 bbb45 9x3(x8)85(x2)4 4 4 5(x4)3x 4x2(5x5)74(x3) 33(x6)86(13.5x) 4(x8)2x 1 1 9(x6)5x5(x9) 4y67y8 6 4 x1 1x 54 8x5.5x5 3 5 x3 4x3 6x4 5(x8)4x 4 3 4a(66a)-4 6b(6b9)21 9x2(4x3)3 8y3(4y2)7 4(x4)7(x3)
4、4x3(x7) 7x8 7x9 8x8.5x5 3 5 8x4 9x1 6x9(x2) 6 12 4y9 3y1 4 5(13y)(2y7) 2 8 3y2 8y8 4y4 4 2(x2)5(x4) 4 8 12 9x5 6x1 9x1.5x6 4 7 7x7 4x8 5x9(x3) 6 9 一、解方程。 7 4xx29 8x2x7 4 x15.5x5x5.5x30822 5x x 5 2x8.5x6268 4 4x81920x x3.5x7 5 x6x1 4x96x2 4 3 7 x2x x8x5x178 8 x6x5x13 y2.5y4y13 y5y10y36 3x7x2 y58y9 5x
5、(9x8)5x2(x6) 3 1 7 bbb85 7x2(x9)85(x7)8 2 2 5(x2)7x 5x2(3x7)45(x2) 42(x10)88(83x) 4(x8)9x 1 1 8(x1)3x7(x2) 2y48y7 2 6 x2 4x 46 x6.5x19 6 6 x3 4x1 4x2 2(x5)6x 4 3 6a(23a)5 5b(3b5)1 7x3(4x8)3 4y2(1y3)3 4(x4)7(x2) 8x4(x9) 2x2 8x2 x2.5x15 3 8 5x2 8x2 2x8(x3) 3 12 8y1 5y9 3 5(82y)(2y6) 2 8 6y6 4y8 6y4 5
6、4(x5)7(x2) 4 6 12 7x2 6x2 x4.5x4 2 5 2x2 8x1 4x9(x6) 6 12 一、解方程。 3 xx46 x7x3 8 5x14.5x8x11.5x35632 7x x 4 x8.5x34.552 2 x61915x x8.5x9 9 x4x6 x56x8 4 9 3 x2x 6x9.5x2x198 2 12x4x8x13 y8.5y8.5y11 y10y9.5y157 x3x8 5y22y6 8x(5x9)8x2(x9) 5 5 3 bbb23 3x4(x2)72(x2)8 2 4 5(x1)9x 6x4(2x3)72(x8) 52(x10)52(77x) 5(x6)6x 1 1 5(x4)5x5(x4) y52y8 5 2 x3 3x 23 x1.5x10 2 5 x2 4x3 6x2 3(x5)5x 4 2 8a(47a)-1 3b(3b2)12 4x4(6x4)2 9y2(2y7)5 2(x6)6(x3) 7x6(x2) 4x6 5x8 x2.5x10 3 6 4x6 5x1 4x3(x4) 3 12 7y9 4y8 1 6(53.5y)(3y2) 4 6 5y5 9y9 2y9 5 4(x3)8(x6) 2 6 12 5x7 4x8 7x9.5x11 3 7 5x3 6x3 4x7(x3) 6 12
