SOLUTION: Lena is (4x+3)years old. Find her age four years ago

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Question 1191351: Lena is (4x+3)years old.
Find her age four years ago
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
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Her age  4  years ago is   (4x+3) - 4 = 4x-1  years   (assuming that 4x-1 >= 1).