4 / 7 / 12 = 1 / 2 / 1-4 / 1 + 5 / 72 (5 / 72 + 3 / 4) = 21 / 90 / 89-1 / 20 / 13 + 2 / 15 14-6 of 15 and 11 of 15 =

4 / 7 / 12 = 4 / 7 × 1 / 12 = 1 / 21,1 / 2,1-4 / 1 + 5 / 72 - (5 / 72 + 3 / 4) = 1 / 2,1-4 / 1 + 5 / 72,5-72,5-4 / 3 = 1 / 2,1 - (1 / 4 + 3 / 4) + (5 / 72,5-72,5) = 1 / 2,1-1 + 0 = 121 / 2,90

RELATED INFORMATIONS

1. 23 out of 18 - (5 out of 18-7 out of 25) It's easy It's best not to share
2. Observe the following sequence: two thirds, three eighths, four fifteenth, five twenty-four, six thirty-five (1) Please write the sixth number (2) according to the above change rule, please write the nth number
3. Help me figure out: 2 to the 9th power + 3 to the square - 1 is equal to The ninth power of 2 + the square of 3 - 1 is equal to?
4. The square of a is 4, the square of B is 9, and ab is less than 0_ The value of B
5. If 0 is less than a and less than 1, what is the size relationship between a, the second power of a and 1 / 2 of a
6. The power of the last number is 2.8?
7. 1. Calculation: X & ﹥ 8226; X & ﹥ 178; - ﹥ 8226; X & ﹥ 179; - ﹥ 8226 X ^ 2009, and think about what will happen if you change 2009 to n?
8. Given x = 2 + 1, find the value of X + 1 - x 2x - 1
9. 1+2+3+4+…… +The sum of 2010 + 2011 is () A. odd B. even 1+2+3+4+…… +The sum of 2010 + 2011 is () A. odd B. even C. multiple
10. 2010-2009+2008-2007…… +2-1 result is odd or even
11. 455*7.6+111*19.2+433.3*76 Someone who knows, come and answer quickly
12. Recursive equation calculation: 17.8 + 6.3 △ (3.2 minus 1.6)
13. Simple calculation of 2002 / 1 × 3 + 2002 / 3 × 5 + 2002 / 5 × 7 + 2002 / 7 × 9 + 2002 / 9 × 11
14. 9 and 5 / 7 - (2 and 1 / 13 + 4 and 5 / 7 + 11 / 13)
15. 1 / 3 + 1 / 5 + 1 / 5 + 1 / 7 + 1 / 7 + 1 / 9 + 1 / 9 + 1 / 11 + 1 / 13 + 1 / 13 + 1 / 15 + 1 / 17 1 ／ 3 + 1 / 3 ／ 5 + 1 / 5 ／ 7 + 1 / 7 ／ 9 + 1 / 9 ／ 11 + 1 / 11 ／ 13 + 1 / 13 ／ 15 + 1 / 15 ／ 17
16. Help me to work out a problem: a thing has nine sides, the probability of each side is one ninth, continuous throwing 7 times, at least once, what is the probability of the ninth side
17. Negative 1 / 3, 2 / 8, 3 / 15, 4 / 24, 5 / 35, 6 / 48, X / Y 1. The value of X and Y 2. Write out the nth number (n is divided into odd number and even number, discuss the sign of number, expressed by n)
18. The result of calculation (+ 1.25) + (- 3 and two fifths) + (- 188;) + (- 0.6) is ()
19. It's more than five sixths of 12. What's two fifths of 25 What's the product of five fourths minus its reciprocal and multiplying the difference by five sixths?
20. (negative 11 and 2 / 3) - (negative 7 and 2 / 5) - 12 and 1 / 3 - (- 4.2) =?