Respuesta :
29 + 4.50x = 42.50 <== here is ur equation
4.50x = 42.50 - 29
4.50x = 13.50
x = 13.50 / 4.50
x = 3 <== he can buy 3 shirts
4.50x = 42.50 - 29
4.50x = 13.50
x = 13.50 / 4.50
x = 3 <== he can buy 3 shirts