解 方程 ( 1) X- 27 X=43 2X + 25 = 35 70%X + 20%X = 3
6 X×53 =20×41 25% + 10X = 54 X - 15%X = 68 X+83 X= 121 5X- 3×2 15 =75 32 X÷41 = 12 6X+ 5 =13
4 834143X 3X=83 X÷72 =1 67 X+87 X=43 4X- 6×32 =2 125 ÷X=310 53 X = 7 22 5 98 X = 61 ×5 11 6 解 方程 ( 2) X÷ 3 56 =4 52 6 ×2 51 3 4x- 3 ×9 = 29 21 x + 61 x = 4 1 03 X- 21×32 =4 6X+ 5 =13
4 25 X-13 X=310 4χ- 6= 3 8X+25%X=90 X-37 X= 89 5X=1 91 5 2 18 X=1 54 X÷54 =2 81 5 32 X÷41 =12 53 X=7 22 5 98 X=61 ×5 11 6 解 方程(3) X÷3 56 =4 52 6 ÷2 51 3 X-0
25=41 4X =30% 4+0
7X=102 32 X+21 X=42 X+41 X=105 X-83 X=400 X-0
125X=8 X3 6 = 43 X+37 X=18 X×( 16 + 38 )=1312 x-0
375x=65 x×32 +21 =4×83 X-73 X= 12 5 X-2
4×5= 8 0
36×5- 34 x = 35 23 (x- 4
5) = 7 12 x- 25%x = 10 解 方程(4) x- 0
8x = 16+6 20 x– 8
5 x- 45 x -4= 21 53 χ+2
4χ=6 3
5: χ=5:4
8χ-χ=2
4 x1 0 =8