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(x + 5) derajat + (3x - 25) derajat = 180 derajat
(4x - 20) derajat = 180 derajat
4x = 180 derajat + 20 derajat
4x = 200 derajat
x = 200 /4 derajat = 50 derajat
<K = (x + 5) derajat
<K = (50 + 5) derajat
<K = 55 derajat
<K + <L = 180 derajat
55 derajat + <L = 180 derajat
<L = 180 derajat - 55 derajat
<L = 125 derajat
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