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人気の例
the sum of three consecutive even integers is 78 . what is value of the smallest integer of three integers?5 The sum of two numbers is 30 and their 差 is 12 .Write two equations and find the numbersThe radius of a 円 is 20 in. Find its area in terms of pi.a father is 4 times as old as his son. in 20 years the father will be twice as old as his son how old is the father nowThe product of two less than a number and seven is thirteen.