75,883-(31,200+х)=99975,883-31,200-х=999-х=999-75,883+31,200-х=954,317х=-954,317
31200+х=75883-99931200+х= 74884х=74884-31200х= 43684
75,883-(31,200+х)=999
75,883-31,200-х=999
-х=999-75,883+31,200
-х=954,317
х=-954,317
31200+х=75883-999
31200+х= 74884
х=74884-31200
х= 43684