若2x+1=8,则4x+1的值为?_数学解答

若2x+1=8,则4x+1的值为?

人气：233 ℃　时间：2020-04-27 08:36:57

解答

2x + 1 = 8
2x = 8 - 1
2x = 7
4x = 7×2
4x = 14
4x + 1 = 14 + 1
4x + 1 = 15