How to turn these mathematical equations into GAMS CODES

Minimize (m; - A; +Cj)Xij iEB jeV subject to x = 1 Vjev, EB m; - 4; >0 ViEV, (2) (3) WD; D;)xij > 0 Vjev, (4) IEB (. - - ) 0 OL- LyYXij -L; Xij > 0 IEB j'ev-V) ViEV (5) my+Cjxig-m IEB x (m your own y X m;+Citij m; viskij > 0 Vi EB, jeV, 1 eV - {j}, (6) m; + Cij Xig m; IEB xm; + Cuxi m/ (1 - Yixy) 0 ViEV, (2) (3) WD; D;)xij > 0 Vjev, (4) IEB (. - - ) 0 OL- LyYXij -L; Xij > 0 IEB j'ev-V) ViEV (5) my+Cjxig-m IEB x (m your own y X m;+Citij m; viskij > 0 Vi EB, jeV, 1 eV - {j}, (6) m; + Cij Xig m; IEB xm; + Cuxi m/ (1 - Yixy)