Question

x/2=5/15

Answer 1

5/15 --- 1/3
What divided by 2 = 1/3?

Answer 2

\[\Huge \frac{ x }{ 2 } = \frac{ 5 }{ 15 }\]
Cross multiply the terms:

\[\huge 15x = 10\]
Divide both sides by 15:
\[\huge x =\frac{ 10 }{ 15 }\]
You can simplify so do that:
\[\huge x = \frac{ 2 }{ 3 }\]