Question 1016006
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Suppose you go to a concert and purchase 3 identical T-shirts and a hat. The hat costs $21 and you spend $60 in all. How much does each T-shirt cost? 
   
   I need the equation for this. We've been working on distributive property and  I may sound stupid for this because it's probably really simple, but I can't figure out the equation and I need help. I know how to do the work, all I need is the equation. Please try to respond as soon as possible. 
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T-shirt_cost = {{{(60 - 21)/3}}} = {{{39/3}}} = 13 dollars.