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人気の例
four times a number plus fifteen is 63.The sum of two numbers is 22 . If the sum of their reciprocals is 11/60 find the numbers.Solve the following problems.:A triangular shaped lot has a base of 16 meters and a height of 28:meters. What is its 面積?The sum of two numbers is 24 . One number is 6 less than twice the other. Find the two numbers.:Let x= one numberrick is 10 years older than his brother jeff. In 4yearsi,Rick will be twice as old as jeff