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  1. Объяснение:

    x + x + x + x \times 5 = 8 \\ 8x  = 8 \\ x = 1

  2. Ответ:

    x+x+x+x×5=8

    x+x+x+5x=8

    8x=8

    x=1

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14:4+8*3-6:2*2+4:1 = ? ( )