Notice how all of these get you the same number. However, when you divide 90 by 137, you get 0.64748, which is not the same as the others. Therefore, 90/137 is the fraction that is not equivalent to 45/70.
The midpoint of a line can be found using either a compass and straightedge <span>construction or a straightedge and tracing paper construction. </span>true :)