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פתרון
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דוגמאות פופולריות
Ten times the sum of a number and 28 is at most 20 .fifty-four less than 4 times a number is equal to the number. What is the number?Five times the sum of 4 and a number is greater than 55.harry is 13, how old would he be after 20 years?You pick a card at random, put it back, and then pick another card at random.:What is the probability of picking a 6 and then picking a 4