Respuesta :

taniaorozco
96 - 4.5y - 3.2y = 5.6y + 42.80

96 - 7.7y = 5.6y + 42.80

96 = 5.6y + 42.80 + 7.7y

96 = 13.3y + 42.80

96 - 42.80 = 13.3y

53.2 = 13.3y

4 = y

hope that helps, God bless!
96 - 42.80 = 4.5y + 3.2y + 5.6y
(opposite signs when you cross over the equal sign)
53.2=13.3y

53.2/13.3=y
4=y