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(9/4 : 5/4) - 7/3= (9/4 × 4/5) -7/3 = 36/20 - 7/3 (di samakan penyebutnya)
108/60-140/60 = -8/15 kalau gak salah
9/4 ÷ 5/4 - 7/3
9/5 - 7/3 = 27/15 - 35/15 = -8/15