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4 October, 01:33

Solving Exponential Equations (lacking a common base)

7^x-2=7

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Answers (2)
  1. 4 October, 03:05
    0
    x = 3

    Step-by-step explanation:

    7^ (x-2) = 7¹

    Equate powers

    x-2 = 1

    x = 3
  2. 4 October, 04:36
    0
    x=3

    Step-by-step explanation:

    7^x-2=7

    7 is equal to 7^1 as it is equals to 7

    7^x-2=7^1

    eliminating the powers

    x-2 = 1

    add 2 to both sides

    x = 1+2 = 3

    lets check the answer

    7^x-2=7

    7^3-2=7

    7^1 = 7

    7=7

    LHS = RHS
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