Представь однозначное число в виде суммы, удобной для вычисления.

        54 + 8 = 54 + ( __ + __ )                42 – 6 = 42 – ( __ + __ )

        79 + 9 = 76 + ( __ + __ )                93 – 7 = 93 – ( __ + __ )


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