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5 September, 04:35

Log (base10) (x+1) - log (base10) (10x-3) = 1

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  1. 5 September, 05:01
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    Keep in mind: logarithmic definition a = log (base b) (b * * a) where * * is exponent and the fact that these logs are the same base (base 10)

    Log (base10) (x+1) - log (base10) (10x-3) = 1

    Log (base10) (x+1) - log (base10) (10x-3) + log (base10) (10x-3) = 1 + log (base10) (10x-3)

    log (base10) (x+1) = 1 + log (base10) (10x-3)

    since 1 = log (base 10) (10) since 10 = 10 * * 1

    log (base10) (x+1) = log (base 10) (10) + log (base10) (10x-3)

    log (base10) (x+1) = log (base10) (10 (10x - 3)) since all logs have same base of 10

    x + 1 = 10 (10x - 3)

    x + 1 = 100x - 30

    -99x = - 31

    x = - 31/-99 = 0.31
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