Both -8/18 and -17/27 are negative numbers and are thus less than 0, so on a number line they would appear to the left of 0, so we should only consider B and D as possible answers. Now is -8/18 is more than -17/27, this will mean that -8/18 will be located closer to 0 than -17/27 and so -8/18 would lie to the right of -17/27 - therefor the answer is D :)