with1) Comparing those fractions we can note the following, after some simplifying.
We can compare them by their decimal value or its integer value obtained by dividing the numerator by the denominator
a) 6/12 = 1/2 = 0.5 < 4/6 =2/3 = 0.67
b) 4/3 =1.33 > 7/6 =1.16
c) 8/5 = 1.6 < 400/100 = 4
d) 12/10=6/5= 1.2 < 35/5=7
e) 11/4 = 2.75 < 17/8= 2.125
f) 7/12 =0.583 < 4/3 =1.33