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Given:
주어진 원 둘레
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the sum of three consecutive numbers is 39. First write an equation and then find the value of the smallest numberSeven less than a number, x, is the same as 15the sum of a number x and 10the sum of a number x and 1-in how much time will a sum of 1600 amount to 1852.20 at 5% per annum compound interest