4 / 6 + 2 / 6-15 / 20 =?

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RELATED INFORMATIONS

1. 1/3=2:( )=4/( ) =( )/15=6/( ) One third = 2 over () = 4 divided by () = fifteen parts () = () six parts
2. Number reasoning problem: - 2,1,0,2,2,6, ()
3. The number reasoning problem is as follows: - 1 10 6 19 17 ()
4. Two civil servants' number reasoning questions 26 13 24 41 (), 15 3 1 3 / 8 3 / 25 ()
5. Numerical reasoning 3 / 8,15 / 24,35 / 48, ()
6. Number reasoning: 2,3,10,15,26,35, (), what are the results and reasons
7. Number reasoning: 1,1,2,3,8,7 () () 35,21
8. Numerical reasoning: 5,7,10,15, (), 35. What should be filled in the blank?
9. Find the next number Such as the title
10. Number reasoning questions 77,49,28,16,12,2,10 b.20 c.36 d.45
11. 6/5*2/15+2/15*4/5 We can't write this preview yet. Teach me. It's also a process. I don't give you points
12. () 0 () × () 6 = () () 58 (), what are the numbers in brackets
13. What are the numbers in brackets Fill in the numbers regularly, why
14. 5 / 6 △ () > 5 / 6 find the number in brackets
15. Tennis match score "6-3 7-6 (4)"
16. What does the number in the last bracket of 6 + 1 mean? For example, buy bet 6 + 1 It's 8 15 14 9 5 17 - 3 (01) That (01) and that - 3
17. Add numbers in brackets to form words () flowers in full bloom Think and act () () unification
18. Four numbers 3, 6, 9 and 12 form a formula with addition, subtraction, multiplication, division sign and brackets, and the result is 24 At least 3
19. 1,8,18,32, () solve the numbers in brackets What's the next number
20. 77 （） 36 18 8