Ответ:
6*(a+b)+3a-2b=6a+6b+3a-2b=9a+4b=
=9*5+4*4=45+16=61
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Ответ:
6*(a+b)+3a-2b=6a+6b+3a-2b=9a+4b=
=9*5+4*4=45+16=61