tolong dijawab pakai cara ya

maaf kalu salah, semoga membantu

1) (x - 7)
-----------
(x² - 49)

= ( x - 7 )
-------------------
(x - 7)(x + 7)

= 1
------------
(x + 7)


2) ( 5 / x ) + ( 1 / 3x )

= 5(3x) + 1(x)
---------------------
(x ) (3x)

= 15x + x
--------------
3x²

= 16x
----------
3x²

= 16
---------
3x