Question 148991
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