SOLUTION: in 15 years, a child's age will be 9 years less than four times her current age. Find her current age.

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Question 844125: in 15 years, a child's age will be
9 years less than four times her current age.
Find her current age.

Answer by algebrahouse.com(1659) About Me  (Show Source):
You can put this solution on YOUR website!
x = child's age now
x + 15 = child's age in 15 years

x + 15 = 4x - 9 {in 15 years she will be 9 less than 4 times her age now}
15 = 3x - 9 {subtracted x from each side}
24 = 3x {added 9 to each side}
x = 8 {divided each side by 3}

her current age is 8

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