1、(4x6)x9 8x7(19x)9y3 y3 1 5x1.5(x2)45 4 6 1 2 (52x)(4x2) 6(9x6)142 9 x 0.9x0.79.13.3x3 4 6 8 1 3x6x 3(x8)5(x9)37 7 (9x5)x8 9x8(17x)14 5 y1 y1 6 1x4.5(x7)35 2 5 (32x)(2x1) 5(8x2)77 x 1 x 0.3x0.14.16.2x3 2 9 2 1 3x9x 9(x1)5(x1)53 8 1 3 (9x4)x3 5x3(20x)17 5 y2 y1 5 4x4.5(x5)15 3 5 (52x)(2x3) 2(4x9)128 7
2、 x 0.1x0.12.71.8x3 4 3 8x7x 7(x6)7(x9)35 7 (3x7)x2 6x3(9x)89 5 y2 y1 7 5x2(x7)15(32x)(5x4) 7(8x5)68 3 x 0.1x0.55.50.3x6 2 6 6x2x 2(x1)4(x7)31 1 (3x2)x7 2x7(5x)38 5 y1 y3 3 0.5x1.5(x6)25 3 6 (42x)(5x1) 6(5x4)12x 0.2x0.68.84.9x9 4 6 5x3x 4(x1)6(x7)103 7 (9x6)x6 5x3(18x)6y1 y3 6 0.5x8(x7)20(42x)(4x5) 6
3、(8x3)204 7 x 0.9x0.63.31.1x6 6 6 6x2x 9(x1)6(x8)9(5x6)x3 7x6(6x)47 0.5x8.5(x8)5(42x)(5x1) 6(5x6)92 5 x 0.8x0.13.46.7x9 8 3 8x6x 6(x3)3(x7)18(5x8)x9 5x4(15x)1y2 y3 5 4.5x7(x8)45 2 6 (52x)(3x5) 4(7x8)2x 0.5x0.74.38.6x8x4x 3(x4)5(x4)179 6 (8x6)x3 8x7(2x)3y1 y2 5 0.5x3(x4)20(32x)(4x5) 9(8x3)11x 0.5x0.15.69.7x6 4 9 8x5x 4(x8)6(x2)1(4x6)x5 2x3(14x)98 3.5x6(x3)50(34x)(5x2) 3(2x6)14