х=у+9
х+3=(у-3)*1,5
у+12=1,5у-4,5
1,5у-16,5=у
0,5у=16,5
у=33
х=42
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х=у+9
х+3=(у-3)*1,5
у+12=1,5у-4,5
1,5у-16,5=у
0,5у=16,5
у=33
х=42