In this question there is 1 equation with 1 unknown variable. So it is absolutely possible to find the value of the unknown variable "x". (4x - 1)/3 = 7/1 4x -1 = 7 * 3 4x - 1 = 21 4x = 21 + 1 4x = 22 x = 22/4 = 11/2 So the value of the unknown variable x is 11/2. So the correct option is option "d". Hope i have answered your question correctly and helped you to understand the method by which these problems should be done.
