回覆列表
  • 1 # lanfengz2

    解:6.4÷0.6+6.4÷0.4等於( 80/3 ),【即約等於26.67】

    ∵已知需求出6.4÷0.6+6.4÷0.4等於多少

    ∴6.4 ÷ 0.6 + 6.4 ÷ 0.4

    = (6×10+4)/10 ÷ 6/10 + (6×10+4)/10 ÷ 4/10

    = 64/10 ÷ 3/5 + 64/10 ÷ 2/5

    = 32/5 × 5/3 + 32/5 × 5/2

    = 32/5 × (5/3 + 5/2)

    = 32/5 × (10/6 + 15/6)

    = 32/5 × 25/6

    = 80/3

    = 26.66666667

    ≈ 26.67

    答:6.4÷0.6+6.4÷0.4等於80/3,【即約等於26.67】

  • 中秋節和大豐收的關聯?
  • 薛定諤的貓通俗解釋?