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2x - x = 7 - 5
x = 2
b. AD = 2x + 5
= 2.2 + 5
= 4 + 5 = 9
c. L BAD = L BCD = 60 derajat
L ABC = 180-(2x60) /2 = (180 - 120) /2 = 30 derajat
b.9
c.60 ° ini
jawabannya klo salah maaf dan gak ada caranya