Anonymous

Now: e - 66 = s 2 years ago e - 2 = 3(s -2) or e = 2 + 3s - 6 e = 3s - 4 Substitute into e - 66 = s so you have a simple equation 3s - 4 - 66 = s 2s = 70 s = 35

Anonymous

"Stephen is 66 years younger than Erica." s = e-66 "Two years ago, Erica's age was three times Stephen's age." e-2 = 3(s-2) e-2 = 3s - 6 e = 3s-4 substitution s = (3s-4)-66 s = 35

Anonymous

Stephen is 66 yrs younger than Erica. 2 yrs ago, Erica's age was 3 times Stephen's age. How old is Stephen? E - S = 66 E - 2 = 3(S - 2) E =101, S = 35 Stephen is 35 years old.