If three times Kathy's age is decreased by 36, the result is twice Kathy's age. How old is Kathy? x = Kathy's age
3x  36 = 2x {three times her age minus 36 equals twice her age} 36 = x {subtracted 3x from both sides} x = 36 {divided both sides by 1} Kathy is 36  Algebra House
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