algebra
posted by donald .
if 3x years from today, Megan will be (3y + 4) times her present age, what is Megan's present age in terms of x and y?

a + 3x = (3y+4)a
a + 3x = 3 y a + 4 a
3x = 3y a + 3 a
x = a (y+1)
a = x/(y+1)
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