1) 43х=502-72
43х=430
х=430/43
х=10
2)-21у=25-67
-21у=42
у=42/-21
у=-2
3)19у=47-200
19у=-153
у=-153/19
у=0,053
4)29х=982-83
29х=899
х=899/29
х=31
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43x=502-72 21y=25-67
x=430÷43 21y=42
x=10 y=2
1) 43х=502-72
43х=430
х=430/43
х=10
2)-21у=25-67
-21у=42
у=42/-21
у=-2
3)19у=47-200
19у=-153
у=-153/19
у=0,053
4)29х=982-83
29х=899
х=899/29
х=31