Решение уравнений 321+(х+13)=450 122+(у-7)=200 204-(х+29)=100 53-(у-13)=24
321+(x+13)=450 x+13=450-321 x+13=129 x=129-13 x=116 122+(y-7)=200 y-7=200-122 y-7=78 y=78+7 y=85 204-(x+29)=100 x+29=204-100 x+29=104 x=104-29 x=75 53-(y-13)=24 y-13=53-24 y-13=29 y=29+13 y=42