• YTG123@sopuli.xyz
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    5 months ago

    Similarly, 1/3 = 0.3333…
    So 3 times 1/3 = 0.9999… but also 3/3 = 1

    Another nice one:

    Let x = 0.9999… (multiply both sides by 10)
    10x = 9.99999… (substitute 0.9999… = x)
    10x = 9 + x (subtract x from both sides)
    9x = 9 (divide both sides by 9)
    x = 1