Misty bought 3 cds . the country music cd cost $12 . the rock music cd cost 2/3 as much as the country music cd . the platinum edition cd cost twice as much as the rock cd .what was the cost of the three cd's

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.