2) -у=121-109-63
-у=-51
у=51
4) 103-z-47=54
-z=54+47-103
-z=-2
z=2
1) х=450-13-321
х=116
3)204-х-29=100
-х=100+29-204
-х=-75
х=75
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2) -у=121-109-63
-у=-51
у=51
4) 103-z-47=54
-z=54+47-103
-z=-2
z=2
1) х=450-13-321
х=116
3)204-х-29=100
-х=100+29-204
-х=-75
х=75