On a number line, what number is two-thirds of the way from 5/8 to 4/7? Express your answer as a common fraction.
We can first find a common denominator.
We can use 56 here.
So 5/8 --> 35/56
and 4/7 --> 32/56
2/3 of the way there would be 34/56 = 17/28.