Ответ:
1)=2а²/5в
2)=1/5у
3)=12х(х-2) / 18(х-2)=12х/18=2х/3
4)=(х-3)(х+3) /3(х-3)=х+3 /3
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Ответ:
1)=2а²/5в
2)=1/5у
3)=12х(х-2) / 18(х-2)=12х/18=2х/3
4)=(х-3)(х+3) /3(х-3)=х+3 /3