Question 1098801
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L + K = 38      (1)

K = L+4         (2)


=======>  substitute it in eq(1).  You will get

L + (L+4) = 38,

2L + 4 = 38,

2L = 38-4 = 34  ====>  L = {{{34/2}}} = 17.


<U>Answer</U>.  Luke biked 17 miles, Kerry 17+4 = 21.


<U>Check</U>.  17 + 21 = 38.
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