MHB How many stickers did Angel and Kareem have altogether?

[Mala]

Angel and Kareem had some stickers. Angel had 5 times as many stickers as Kareem. After Angel gave 36 stickers to Kareem, both of them had an equal number of stickers. How many stickers did they both have altogether

 

[skeeter]

Angel had 5 times as many stickers as Kareem

$a = 5k$

Angel gave 36 stickers to Kareem, both of them had an equal number of stickers.

$a-36 = k+36$

solve the system of equations