To solve for x in the equation log7(x) = -1, we can rewrite the equation in exponential form.

For log7(x) = -1, we can rewrite it as:

7^-1 = x

7^-1 is equal to 1/7, so we can rewrite the equation as:

1/7 = x

Therefore, the solution to the equation log7(x) = -1 is x = 1/7.