x取什么值时,代数式5(x+2)比2(1-3x)的值小3_数学解答

x取什么值时,代数式5(x+2)比2(1-3x)的值小3

人气：214 ℃　时间：2019-09-20 09:52:28

解答

5(x + 2) + 3 = 2(1 - 3x)
5x + 10 + 3 = 2 - 6x
5x + 13 = 2 - 6x
5x + 6x = 2 - 13
11x = -11
x = (-11)÷11
x = -1