Answer
The number of years watching TV: $9.$
The number of years sleeping: $28.$
Work Step by Step
The number of years watching TV: $ x $
The number of years sleeping: $ x+19$
Total = $ x+(x+19)=2x+19.$
We are given that the total is 37.
$ 2x+19=37 \qquad $ ... subtract $19$
$2x=37-19$
$ 2x=18 \qquad $ ... divide with 2
$ x=9$
$(x+19=9+19=28)$
The number of years watching TV: $9.$
The number of years sleeping: $28.$
