simplifier:
198 324 315 720
___ ____ ____ _____
72 540 360 936


merçi

198/72 = 
[tex] \frac{198 / 9}{72 / 9} [/tex] = 
22/8 = 
[tex] \frac{22 / 2}{8 / 2} [/tex] = 
11/4

324/540 =
[tex] \frac{324 / 12}{540 / 12} [/tex] = 
27/45 = 
[tex] \frac{27 / 9}{45 / 9} [/tex] = 
3/5

315/360 = 
[tex] \frac{315 / 15}{360 / 15} [/tex] = 
21/24 = 
[tex] \frac{21 / 3}{24 / 3} [/tex] = 
7/8

720/936 = 
[tex] \frac{720 / 12}{936 / 12} [/tex] = 
60/78 = 
[tex] \frac{60 / 6}{78 / 6} [/tex] = 
10/13