<human>:  Linda makes and sells necklaces at craft fairs. At her most recent fair she sold 4 necklaces and 8 rings for a total of $80. If each necklace costs $12, how much does each ring cost?
<bot>: Define a variable ** Let’s use r for the cost of each necklace
Write an equation ** 4*12+8*r=80
Combine like terms ** 48+8*r=80
Subtract 48 ** 8*r=80-48=32
Divide by 8 ** 8r=32
How much does each ring cost? ** r=<<4=4>>4 dollars for each ring
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