1/5X+(1/5X-20)+500=X解方程,算出X_数学解答

1/5X+(1/5X-20)+500=X
解方程,算出X

人气：445 ℃　时间：2020-02-06 08:37:16

解答

1/5X+(1/5X-20)+500=X 2/5 * x + 480 = x 480 = x - 2/5 * x 480 = 3/5 * x x = 480 * 5/3 = 800