ЧАСТИНА 2. Вправи 690 - 800 » 723
Обчисліть: (6,8 – 55/9) : (213/30 – 21/12) ∙ 3,6 = (64/5 – 55/9) : (213/30 – 21/12) ∙ 18/5 = (636/45 – 525/45) : (226/60 – 25/60) ∙ 18/5 = 111/45 : 21/60 ∙ 18/5 = 56/45 ∙ 60/21 ∙ 18/5 = 64/5 = 124/5.
Обчисліть: (6,8 – 55/9) : (213/30 – 21/12) ∙ 3,6 = (64/5 – 55/9) : (213/30 – 21/12) ∙ 18/5 = (636/45 – 525/45) : (226/60 – 25/60) ∙ 18/5 = 111/45 : 21/60 ∙ 18/5 = 56/45 ∙ 60/21 ∙ 18/5 = 64/5 = 124/5.