当X取何值时,代数式3(3x-2)的值比4x-1/2的值的2倍小6?
问题描述:
当X取何值时,代数式3(3x-2)的值比4x-1/2的值的2倍小6?
答
3(3x-2)+6 =2 (4x-1)/2
去分母 3(3x-2)+6 = 4x-1
去括号 9x -6 +6 = 4x -1
9x = 4x -1
合并同类项 9x -4x = -1
5x = - 1
x = - 1/5