Help.
( [2x] / 5 - 9 ) + 9 note that we could write
[ 2x ]/ 5 + ( -9 + 9) =
[2x ] / 5 + 0 =
[2x] / 5
Perimeter = 2 [ Width + Height ] =
2 [ (3y - 5) + ( 2y) ] =
2 [ 3y + 2y - 5 ] =
2 [ 5y - 5 ] =
10y - 10