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人気の例
Ten less than twice a number is the same as 7 times the number. Find the numbSix times a number decreased by 27 is the same as 9 times a number increased by 15.9 subtracted from the product of 9 and a number1/4 of a number x is 20The 面積 of a rectangular window is 4180 cm^2. If the width of the window is 55 cm, what is its length?