475 - (х-671) = 325

972 - (у-504) = 284

403 - (634-а) = 366

643 - (581-b) = 292

987 - (x+364) = 519

3127 - (m+425) = 1509

475 - (х-671) = 325

475-x+671=325

-x=325-475-671

-x=-821

x = 821

972 - (у-504) = 284

972-y+504=284

-y = 284-504-972

-y=-1192

y=1192

403 - (634-а) = 366

403-634+a=366

a=366-403+634

a=327

643 - (581-b) = 292

643-581+b=292

b=292-643+581

b = 230

987 - (x+364) = 519

987-x-364=519

-x=519-987+364

-x = - 104

x = 104

3127 - (m+425) = 1509

3127-m-425=1509

-m=1509+425-3127

-m=-1193

m=1193