tolong jawab buat besok pake cara

a. 0,5 + ⅓ - 25% = 5/10 + ⅓ - 25/100 = ½ + ⅓ + ¼ = 6/12 + 4/12 - 3/12 = 7/12

b. ½ + (⅓ x ¼) = ½ + 1/12 = 6/12 + 1/12 = 7/12

c. ½ + (⅓ : ¼) = ½ + (⅓ x 4/1) = ½ + 4/3 = 3/6 + 8/6 = 11/6 = 1 5/6