The quotient of a number and 2 can be expressed as x / 2 The difference between 6 and the number can be expressed as 6 - x therefore the answer is; x / 2 = 6 - x
worked out it is 1/2x = -x + 6 1/2x + x = -x + 6 + x 3/2x = 6 3/2x * 2/3 = 6 * 2/3 x = 4