ANSWER:
64/107 is bigger
STEP-BY-STEP EXPLANATION:
In this case, what we must do is calculate the decimal form in each fraction in order to determine which is bigger, just like this:
[tex]\begin{gathered} \frac{64}{107}\cong0.6 \\ \frac{15}{35}\cong0.4 \\ \text{therefore} \\ 0.4<0.6 \\ \frac{15}{35}<\frac{64}{107} \end{gathered}[/tex]Which means that 64/107 is bigger that 15/35
