How do I prove that if x, y, and z are rational numbers, then (x+y+z) is also a rational number?
V vanjewel New member Joined Mar 31, 2009 Messages 2 Mar 31, 2009 #1 How do I prove that if x, y, and z are rational numbers, then (x+y+z) is also a rational number?
D Deleted member 4993 Guest Mar 31, 2009 #2 Re: rational numbers vanjewel said: How do I prove that if x, y, and z are rational numbers, then (x+y+z) is also a rational number? Click to expand... Assume x = a/b, y = c/d and z = e/f where a, b, c, d, e & f are integers. then find (x+y+z)
Re: rational numbers vanjewel said: How do I prove that if x, y, and z are rational numbers, then (x+y+z) is also a rational number? Click to expand... Assume x = a/b, y = c/d and z = e/f where a, b, c, d, e & f are integers. then find (x+y+z)
