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13 September, 18:24

Solve the following exponential equation.

22x+1=215

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Answers (2)
  1. 13 September, 18:38
    0
    22x+1=215

    22x=214

    x = 9.72727272727
  2. 13 September, 21:38
    0
    22x+1=215 : x = 107/11

    (decimal x=9.72727)

    22x+1=215 subtract 1 from both sides 22x+1-1=215-1

    22x=214 divide both by 22 22x/22=214/22

    x=107/11
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