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解
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人気の例
Solve the system of equations x/6+y/8 =14 and x/8+y/6 =14Sanjay borrowed 7,000 at a simple interest rate of 3% per year. After a certain number of years he had paid 840 in interest altogether. How many years was that?seventeen is eight more than a numberFive times the sum of a number and 17 is at least-15.3 years from now david's age will be 3 times his age 12 years ago. How old was david 12years ago