x-20=150-x+20 [列方程解]_数学解答

x-20=150-x+20 [列方程解]

人气：214 ℃　时间：2020-04-05 04:13:27

解答

x - 20 = 150 - x + 20
x + x = 150 + 20 + 20
2x = 190
x = 190 ÷ 2
x = 95