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x = 60/12
x = 5 derajat
12x + x + 5y = 180
12 * 5 + 5 + 5y = 180
60 + 5 + 5y = 180
65 + 5y = 180
5y = 180 - 65
5y = 115
y = 115/5
y = 23 derajat
x=60/12
=5derajat
y=12 derajat