Lời Giải
Lời Giải
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Ví dụ phổ biến
Jaime is 4 years younger than Willy. Twelve years ago, Willy was twice older than Jaime. Find their present ages.The sum of two numbers is 38. The larger of number is seven less than twice the smaller number.The radius of a circle is 7 meters. What is the circle's chu vi?nine times the sum of a number and 2 equals 5five more than the quotient of a number and 4 is equal to 7