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write and solve an equation to find the original price of the shirt?

A coupon subtracts $5.16 from the price p of a shirt. You pay $15.48 for the shirt after using the coupon.
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2 Answers

p = 15.48 + 5.16 (Or p - 5.16 = 15.48)
p = 20.64
 
The original price was $20.64. The coupon discount was $5.16, leaving $15.48 to be paid for the shirt.
 
 
Hi Travina;
p-$5.16=$15.48
Let's add $5.16 to both sides of the equation...
p-$5.16+$5.16=$15.48+$5.16
p=$20.64