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(x+58)-37=91 , (х+58)=91+37, (х+58)=128, х=128-58, х=70
69-(y-28)=13 , (y-28)=69-13, (y-28)=56, y=56+28, y=84
321+(x+13)=450 , (х+13)=450-321, (х+13)=129, х=129-13, х=116
204-(x+29)=100, (х+29)=204-100, (х+29)=104, х=104-29, х=75
