Berapa hasil dari:a. (-5/4) + 2/3b. (-6/2) + (-4/5)c. 4/7 - (-3/4)d. (-5/6) - (-6/3)e. 4/6 × (-2/7)f. (-5/7) × (-2/4)g. 8/4 : (-3/7)h. (-2/4) : (-9/4)Jelaskan beserta caranya!
Answer (1)
a. (-5/4) + 2/3Samakan penyebut → 12= (-15/12) + (8/12)= -7/12b. (-6/2) + (-4/5)-6/2 = -3= -3 - 4/5= -15/5 - 4/5= -19/5c. 4/7 - (-3/4)Tanda minus ketemu minus → jadi plus= 4/7 + 3/4= 16/28 + 21/28= 37/28d. (-5/6) - (-6/3)Tanda minus ketemu minus → jadi plus= -5/6 + 6/3= -5/6 + 12/6= 7/6e. 4/6 × (-2/7)Kalikan langsung pembilang & penyebut= (4×-2) / (6×7)= -8/42= -4/21f. (-5/7) × (-2/4)Negatif × negatif = positif= (5×2) / (7×4)= 10/28= 5/14g. 8/4 : (-3/7)8/4 = 2= 2 ÷ (-3/7)= 2 × (7/-3)= 14/-3= -14/3h. (-2/4) : (-9/4)-2/4 = -1/2= (-1/2) ÷ (-9/4)= (-1/2) × (4/-9)= 4/18= 2/9Jadi hasil akhir:a. -7/12b. -19/5c. 37/28d. 7/6e. -4/21f. 5/14g. -14/3h. 2/9
