134+х-583=426
х=426-134+583
х=875
208+х-416=137
х=137-208+416
х=345
х-506+215=429
х=429+506-215
х=720
у-164+308=500
у=500+164-308
у=356
942-а-126=254
-а=254-942+126
-а=-562 (•(+1))
а=562
801-b-224=368
-b=368-801+224
-b=-209 (·(+1))
b=209
134+х-583=426
х=426-134+583
х=875
208+х-416=137
х=137-208+416
х=345
х-506+215=429
х=429+506-215
х=720
у-164+308=500
у=500+164-308
у=356
942-а-126=254
-а=254-942+126
-а=-562 (•(+1))
а=562
801-b-224=368
-b=368-801+224
-b=-209 (·(+1))
b=209