If the quotient of a divided by B is one eighth, then a: B = 9:8

If the quotient of a divided by B is one eighth, then a: B = 9:8

Because a / b = 1 / 8, so B = 8a, so a: B = A: 8A = 1:8
So the original question is wrong

2 / 9 + 1 / 4 divided by 2 / 5 + 3 / 8

2 / 9 + 1 / 4 divided by 2 / 5 + 3 / 8
=2 / 9 + 1 / 4 × 5 / 2 + 3 / 8
=2 / 9 + 5 / 8 + 3 / 8
=2 / 9 + 1
=One and two ninths

-9 () 0 - 1 / 3 () - 1 / 2 0 () 6 / 7 - 0.5 () 0.5 ratio

-9（＜）0
-1/3（＞）-1/2
0（＜）6/7
-0.5（＜）0.5

5 / 14 / 9 / () = () / () = 1 / 2

5 / 10 = 14 / 28 = 9 / (18) = (a) / (2a) = 1 / 2

-9 () 0 - 1 / 3 () - 1 / 2 0 () 6 / 7 - 0.5 () 0.5 compare size

-9 (<) 0, - one third (>) - one half, 0（

One third, one half, five ninth, seven twelfth, three fifths. What are the sixth and seventh?

11/18,13/21
The original sequence is
1/3,3/6,5/9,7/12,9/15
thirteen thousand five hundred and seventy-nine
3 6 9 12 15

-|-18 and three-quarters | + (+ 43 and one-half) - | - (- 13 and one-third) | + | - 70 and one-half|
(- 2 * 5) ^ 3 - (- 1 9 / 7) / (- 4 / 3) ^ 2 - (- 0.1 / 1) ^ 2 / (- 0.1) ^ 3 the number of parts in brackets is the space with fraction
[4 3 / 2 divided by (- 2 5 / 4) + (- 0.4) * (- 6 4 / 1)] * 1 5 / 1 divided by (0.125 ^ 10 * 8 ^ 9), "/" not represented by Chinese characters is the fractional line
It's urgent!

-|-18 and three quarters | + (+ 43 and one half) | - (- 13 and one third) | + | - 70 and one half | = - 18 and 3 / 4 + (43 and 1 / 2 + 70 and 1 / 2) - 13 and 1 / 3 = - 32 and 1 / 12 + 114 = 81 and 11 / 12 (- 2 * 5) ^ 3 - (- 1 and 7 / 9) / (- 4 / 3) ^ 2 - (- 0.1 / 1) ^ 2 / (- 0.1) ^ 3 = - 1000 + 16 / 9 × 9 / 16-0.01 / (...)

If there is a series of numbers, one-third, one-half, nine percent, fifty-two percent, seventy-five percent, Thirty-eight percent, eleven percent, Twenty-one percent, thirteen percent, then the 2010 score

The number of this column is: 1 / 3 =, 1 / 2 = 3 / 6,5 / 9,7 / 12,3 / 5 = 9 / 15,11 / 18,13 / 21, the number of 2010 is: (2010 * 2-1) / (3 * 2010) = 4019 / 6030 Law: the numerator is 2N-1, the denominator is 3N, where n is the number of terms

Fill in the numbers according to the rules: one third, one half, five ninth, seven twelfth, three fifths, eleven eighteenth The 11th number is ()

Around
Because 1 / 3 = 1 / 3
②1/2=3/6
③5/9=5/9
④7/12=7/12
⑤3/5=9/15
⑥11/18=11/18
Because the transformed molecules follow the principle of 2N-1
The denominator follows the principle of 3N
So the eleventh number is 21 / 33 = 7 / 11
That's seven out of eleven

One third, one half, five ninth, seven twelfth, thirty-eight fifths, eleven fifths, what's the 100th

1/3,1/2,5/9,7/12,3/5,11/18
1/3,3/6,5/9,7/12,9/15,11/18
an=(2n-1)/(3n)
a100=(2*100-1)/(3*100)=199/300