应该有很多,看你想知道简单的还是复杂的.一、最简单的如3.5x = 140 13.7—x = 5.29 3.5÷x = 140 x÷3.5 = 140 x+3.5 = 140二、稍微复杂的2x +5 = 40 15x+6x = 168 4.2 × 3—3x = 5.1 96÷6+0.2x=56三、复杂的4.2 ... 应该有很多,看你想知道简单的还是复杂的.一、最简单的如3.5x = 140 13.7—x = 5.29 3.5÷x = 140 x÷3.5 = 140 x+3.5 = 140二、稍微复杂的2x +5 = 40 15x+6x = 168 4.2 × 3—3x = 5.1 96÷6+0.2x=56三、复杂的4.2 ...