Simplify using exponent rules 7^4 x 7 x 7^13 x 7^-20
To simplify the expression, we can apply the exponent rules.
The rule states that when multiplying numbers with the same base, we can add their exponents.
So, let's apply the rule to simplify the expression:
7^4 x 7 x 7^13 x 7^-20
= 7^(4+1+13-20)
= 7^(-2)
Therefore, the simplified expression is 7^(-2).