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Let the sons age be x. Father = 7x, son = x 2 years ago they were: Father = (7x-2) and son = (x-2) 7x-2 = 13(x-2) 7x-2 = 13x-26 7x-13x = -26+2 -6x = -24 x = -24/-6 x = 4 The son is 4 years old. Father's age = 7*4 = 28 The father is 28 years old.

let the sons age be "x" and the father age be "7x" two years ago The sons age be "x-2" and the father age be "7x-2" and the father was 13 times as old as his son 7x-2=13(x-2) by distributive property 7x-2=13x-26 6x=24 x=24/6 x=4 the sons age be "4" years and the fathers age be 7x=7(4) =28 and the fathers age be "28" years.