I guess the error is in the calculus. -1/4 divided by 3/2: (-1/4)/(3/2): When dividing 2 fractions, its answer is equal to the first fraction multiplied by the inverse of the second. (-1/4)/(3/2) = -1/4 * 2/3 = -2/12 So -1/4 divided by 3/2 is different from -4/1 multiplied by 3/2. -1/4 divided by 3/2 = -1/4 multiplied by 2/3.
