Сократим дроби:
1) 5 ( 9а - 4b + c ) = 45a - 20b + 5c
2) -8 ( x - 8 - 7y ) = -8 + 64 + 56y
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Сократим дроби:
1) 5 ( 9а - 4b + c ) = 45a - 20b + 5c
2) -8 ( x - 8 - 7y ) = -8 + 64 + 56y