1、七年级数学上册一元一次方程110一、解方程。 9 6xx58 x2x2 8 x13.5x2x6.5x35874 7x x 18 3x9.5x32.592 2 6x91513x x4.5x4 3 x6x1 4x86x3 2 3 3 x9x x8x6x152 4 x4x2x12 7y4y9y5 y3.5y10y83 x4x8 9y52y3 6x(7x8)9x5(x1) 7 1 3 bbb27 6x2(x7)15(x5)2 4 2 5(x2)5x 2x2(4x9)85(x1) 82(x6)72(58.5x) 4(x5)5x 1 1 9(x6)5x9(x4) 5y23y2 5 5 x3 3x 63 x
2、6.5x18 3 4 x3 2x3 3x5 2(x8)7x 6 4 9a(15a)0 5b(6b2)18 7x4(5x4)2 7y4(6y7)7 2(x2)6(x3) 6x5(x4) 9x3 7x9 4x6.5x20 4 6 8x6 5x7 2x9(x9) 3 12 8y7 7y3 3 5(32.5y)(3y5) 2 8 6y7 9y4 3y7 3 2(x2)5(x3) 2 6 12 5x3 6x8 x4.5x13 4 8 7x4 9x3 3x8(x9) 3 12 一、解方程。 5 xx16 x9x6 8 2x18.5x9x9.5x30228 3x x 7 4x0.5x3164 8 8x571
3、6x 6x8.5x17 7 x6x1 x57x4 8 3 3 x5x x7x8x128 4 17x8x9x9 8.5y3.5y8y15 y3.5y7y154.5 9x3x6 y55y9 3x(6x3)3x3(x2) 5 3 1 bbb24 6x3(x8)64(x8)8 2 2 2(x2)9x 4x4(6x5)92(x3) 92(x8)72(78x) 5(x5)5x 1 1 9(x5)2x5(x7) y47y5 3 6 x3 2x 13 x3.5x7 6 5 x2 3x2 5x5 5(x6)3x 4 4 7a(58a)2 3b(4b9)3 6x2(2x3)6 6y4(3y4)6 2(x6)6(x
4、6) 5x6(x1) 7x5 4x4 7x5.5x20 2 6 5x2 5x2 4x7(x6) 6 9 7y7 2y7 3 2(11.5y)(3y8) 2 8 3y4 8y8 2y1 1 3(x1)6(x6) 2 6 12 3x7 6x1 x8.5x2 3 6 9x2 7x5 6x8(x7) 3 12 一、解方程。 7 xx27 9x9x9 8 x14.5x9x12.5x35428 5x x 3 x9.5x91.538 2 x71213x x9.5x20 1 x6x1 3x28x6 2 3 7 x5x x8x5x204 4 x7x7x9 y3y5.5y11 10y9.5y9y69.5 x6x9
5、 y35y4 6x(7x9)9x5(x2) 5 3 9 bbb26 3x4(x4)85(x1)2 2 2 2(x9)2x 4x3(5x6)62(x9) 34(x1)96(33x) 4(x7)8x 1 1 8(x4)5x9(x3) 4y64y7 2 3 x3 1x 14 5x7.5x17 3 2 x3 2x2 7x5 5(x6)3x 6 3 3a(39a)5 2b(4b2)21 3x4(2x2)5 8y2(4y4)5 4(x6)8(x1) 8x2(x6) 3x2 9x4 x7.5x14 4 6 2x3 4x2 3x8(x3) 3 12 4y1 2y8 4 3(33.5y)(3.5y2) 4 8
6、8y9 4y8 5y9 1 4(x6)6(x5) 4 6 12 3x6 2x5 3x1.5x7 4 8 2x2 9x5 8x2(x3) 3 9 一、解方程。 3 xx47 x8x7 8 x0.5x3x19.5x351062 3x x 18 4x6.5x3332 2 x51720x 8x8.5x20 3 x4x2 x67x9 2 3 1 x6x 6x1.5x2x112 8 x6x5x10 y5.5y3.5y20 y2y1.5y63 x2x4 y37y5 8x(8x4)9x5(x1) 1 7 7 bbb25 7x2(x4)32(x1)8 2 2 5(x1)6x 5x2(2x3)43(x1) 52(x8)56(68x) 3(x2)2x 1 1 2(x2)3x7(x7) 6y88y8 4 4 x3 2x 45 8x3.5x7 5 2 x2 4x4 3x6 4(x2)9x 3 2 8a(32a)-3 5b(3b7)3 6x4(3x9)10 7y3(6y3)3 3(x2)6(x1) 2x5(x9) 8x1 5x3 3x8.5x7 4 6 9x2 4x7 8x3(x3) 6 12 9y8 5y9 6 4(24y)(3y9) 2 6 2y7 9y1 3y1 2 3(x4)6(x6) 2 6 12 8x1 2x3 3x7.5x15 3 7 7x1 5x9 8x3(x9) 3 12
