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b. 1) x + 25 = 14 + 25 = 39 derajat''''''''''' 2) 6x derajat = 6 X 14 = 84 derajat '''''''''''3) 5x - 13 derajat = 5 X 14 - 13 = 70 - 13 = 57 derajat
c. segitiga sembarang