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? asked in Science & MathematicsMathematics · 5 years ago

Can someone solve this please. 2^(5-3x)= 1/16.?

Update:

correct answer is 3. I don't know the steps to get there though.

2 Answers

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  • ?
    Lv 7
    5 years ago

    2^(5 - 3x) = 1/16

    2^(5 - 3x) = 1/2^4

    2^(5 - 3x) = 2^-4

    3x = 9

    x = 3

  • Mathmom
    Lv 7
    5 years ago

    　

    2^(5−3x) = 1/16

    2^(5−3x) = 1/2^4

    2^(5−3x) = 2^(−4)

    5−3x = −4

    −3x = −9

    x = 3

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