SOLUTION: eleven years ago,lauren was half as old asa mike will be 4 years. if mike is myears old now,how old is lauren in terms of m ?

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Question 148991: eleven years ago,lauren was half as old asa mike will be 4 years. if mike is myears old now,how old is lauren in terms of m ?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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eleven years ago,lauren was half as old asa mike will be 4 years.
L - 11 = .5(M + 4)
:
if mike is m years old now,how old is lauren in terms of m ?
L - 11 = .5M + 2
:
L = .5M + 2 + 11
:
L = .5M + 13