Answer: i needed this question too!
To find the simpliest form of a fraction, all you need to do is divide the numerator and denominator by their greatest common factor, in which in this case, is 2. And so all you need to do is divide the numerator(42) and the denominator(50) by 2, to get 21/25. This means that the simpliest form of 42/50 is 21/25.
Great Job! they are all correct. :)
Good luck in your next tests.
interpretation: x/2+y/6-z/4
Input:
x/2 + y/6 - z/4
Alternate form:
1/12 (6 x + 2 y - 3 z)
Real root:
z = 2 x + (2 y)/3
Root: