? 發問時間: 藝術與人文詩詞與文學 · 1 0 年前

分數的問題實在是不懂怎麼寫~~~~急急急

Q1:5/6-3/5x(7/12+1/4)=

Q2:2 3/4x8/9-10/21÷1 3/7=

Q3:(7/10+4/5÷1/3)x3/4=

Q4:1/4+6÷3/4-1/2x1 1/4=

Q5:6/25x(2 1/3-4/5+2/15)=

Q6:6x{ (2 1/3-0.8)÷1/3 }=

Q7:4 1/5x11/35 ÷1 4/5-2/5=

Q8:(2-1/3)x4/5+5/6÷(2/3-1/4)=

Q9:11/17x{ (2/3)^3÷33/34 }÷1/3^2=

Q10:5^2x7^2x11/2x3^2x6÷5x7x13/2^2x3=

希望以上可以附上算是~~

Q9的題目:(2/3)^3是三分之二的三次方

1/3^2是三的二次方之一

Q10的題目:5^2x7^2x11/2x3^2x6分析是這樣嘀~~

二乘三的二次方乘六分之五的二次方乘七的二次方乘十一!!

5x7x13/2^2x3是二的二次方乘三分之五乘七乘十三

謝謝~~

1 個解答

評分
  • 1 0 年前
    最佳解答

    Q1:

    5/6-3/5x(7/12+1/4)

    =5/6-3/5x(7/12+3/12)

    =5/6-3/5x10/12

    =5/6-30/60

    =5/6-1/2

    =5/6-3/6

    =2/6=1/3

    Q2:

    2 3/4x8/9-10/21÷1 3/7

    =11/4x8/9-10/21÷10/7

    =88/36-10/21x7/10

    =22/9-1/3

    =22/9-3/9

    =19/9

    Q3:

    (7/10+4/5÷1/3)x3/4

    =(7/10+4/5x3/1)x3/4

    =(7/10+12/5)x3/4

    =(7/10+24/10)x3/4

    =31/10x3/4

    =93/40

    Q4:

    1/4+6÷3/4-1/2x1 1/4

    =1/4+6x4/3-1/2x5/4

    =1/4+8-5/8

    =2/8+7 8/8-5/8

    =7 5/8

    Q5:

    6/25x(2 1/3-4/5+2/15)

    =6/25x(7/3-4/5+2/15)

    =6/25x(35/15-12/15+2/15)

    =6/25x25/15

    =6/15

    Q6:

    6x{ (2 1/3-0.8)÷1/3 }

    =6x{ (7/3-8/10)÷1/3 }

    =6x{ (70/30-24/30)x3 /1}

    =6x{ 46/30x3 }

    =6x46/10

    =138/5

    Q7:

    4 1/5x11/35 ÷1 4/5-2/5

    =21/5x11/35 ÷9/5-2/5

    =21/5x11/35 x5/9-2/5

    =11/15-6/15

    =5/15

    =1/3

    Q8:

    (2-1/3)x4/5+5/6÷(2/3-1/4)

    =(6/3-1/3)x4/5+5/6÷(8/12-3/12)

    =5/3x4/5+5/6÷5/12

    =4/3+5/6x12/5

    =1 1/3+2

    =3 1/3

    Q9:

    11/17x{ (2/3)^3÷33/34 }÷1/3^2

    =11/17x{ (8/27x34/33 }÷1/9

    =11/7x8/27x34/33x9/1

    =272/63

    =4 20/63

    Q10:

    5^2x7^2x11/2x3^2x6÷5x7x13/2^2x3

    =25x49x11/2x9x6÷5x7x13/4x3

    =(25x49x11/2x9x6)x(4x3/5x7x13)

    =(25x49x11x4x3)/(2x9x6x5x7x13)

    =385/117

    =3 34/117

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