X + Y = Z
X= (Total number of hours that Liam sleeps + Total number of hours that Paige sleeps)
Y= (Total number of hours that Matt sleeps + Total number of hours that Shannon sleeps)
Z= (Level of parental satisfaction on any given day)
X + Y = Z
X= (Total number of hours that Liam sleeps + Total number of hours that Paige sleeps)
Y= (Total number of hours that Matt sleeps + Total number of hours that Shannon sleeps)
Z= (Level of parental satisfaction on any given day)