U should use friendly numbers when subtracting.......the numbers have to be between 3 and 10
I would say no, if you follow the lines on the graph, 12 on the x axis and 5 on the Y axis they are not within the range indicated in gray.
First we have to get the LCM of 8 and 6, which is 24. so the fractions with be Maria 9/24 and Nina 12/24. therefore Nina are more