Which expressions is equivalent to 7 {}^( - 4) * 7 {}^(3) ​

Question

Which expressions is equivalent to

`7 {}^( - 4) * 7 {}^(3)`
​

Answer 1

7⁻⁴×7³ =
`(7^(3) )/(7^(4) ) = (1)/(7)`

:)