Mastering the Fraction: Simplify (3/7)^-9

Question

(37)9=? (\frac{3}{7})^{-9}=\text{?}

Video Solution

Solution Steps

00:06 Let's simplify the problem.
00:09 To get rid of a negative exponent,
00:12 flip the numerator and denominator. This makes the exponent positive.
00:17 Let's apply this to our exercise by flipping them.
00:23 When you have a fraction with an exponent, raise both parts to that power.
00:31 Now, let's use that formula in our example.
00:35 And there you have it, that's the solution!

Step-by-Step Solution

To solve the problem, we will follow these steps:

  • Step 1: Apply the negative exponent rule to rewrite the expression.
  • Step 2: Use the power of a fraction rule to find the correct form.

Now, let's work through each step:
Step 1: The expression is (37)9(\frac{3}{7})^{-9}. Using the negative exponent rule, we can rewrite it as 1(37)9\frac{1}{(\frac{3}{7})^{9}}.

Step 2: By applying the power of a fraction rule, we find 1(37)9=13979\frac{1}{(\frac{3}{7})^{9}} = \frac{1}{\frac{3^9}{7^9}}.
This expression can further be simplified to 7939\frac{7^9}{3^9} by inverting the fraction in the denominator.

Therefore, the solution to the problem is 7939 \frac{7^9}{3^9} .

Answer

7939 \frac{7^9}{3^9}