化简常数
5112.4 - (3.06%x × 80%) = x
5112.4 - 2.448%x = x
移项
5112.4 = (1 + 2.448%)x
5112.4 = 1.02448%x
x = 5000
5122.4-【3.06％x ×（1-20％）】=x 怎麼解 已知答案不知过程.x=5000,球过程,算了几次都不对
化简常数
5112.4 - (3.06%x × 80%) = x
5112.4 - 2.448%x = x
移项
5112.4 = (1 + 2.448%)x
5112.4 = 1.02448%x
x = 5000