Respuesta :
with this equation, substituting D for the cost, you have
260=25w+35
now subtract 35 from both sides
225=25w
divide by 25 on both sides
you get 9=w
so 9 watches
260=25w+35
now subtract 35 from both sides
225=25w
divide by 25 on both sides
you get 9=w
so 9 watches