Danny collects bottle caps and wrappers. He found 22 bottle caps and 30 wrappers at the park. Now he has 17 bottle caps and 57 wrappers in his collection. How many wrappers did danny have at first?
Danny's collection at the park:

$x$ bottle caps

$y$ wrappers

$x + y = 22 + 30 = 52$

Danny's collection now:

$x'$ bottle caps

$y'$ wrappers

$x' + y' = 17 + 57 = 74$

We need to find $y$

$x + y = x' + y'$

$y = y' - x' + x$

$y = 57 - 17 + 22 = 62$

Danny had 62 wrappers at first.