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What is the value of x in this simplified expression 7^-9x 7^-3=7^x

1 Answer

3 votes

Answer:

x = -12

Explanation:


{7}^( - 9) * {7}^( - 3) = {7}^(x)

the base is equal so we can add the number above


{7}^( - 9 + ( - 3)) = {7}^(x)


{7}^( - 12) = {7}^(x)

the base is equal so is the number above

-12 = x

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