Ответ:
3×+2у=12
3×+2у-12=12-12
3×+2у-12=0
5×-2у=4
5×-2у-4=4-4
5×-2у-4=0
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Ответ:
3×+2у=12
3×+2у-12=12-12
3×+2у-12=0
5×-2у=4
5×-2у-4=4-4
5×-2у-4=0