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асаляя
@асаляя
August 2022
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как упростить выражение 1)а+(-в)-(-2а)
2)-а-(+а)+2в-(-в)
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ВоИнСвЕтА
А+(-в)-(-2а) = 3а-в
-а-(+а)+2в-(-в)= -2а=3в
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В последнем опечатка -2а+3в
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-а-(+а)+2в-(-в)= -2а=3в