To find out the fraction of a number and how to calculate it, please list the formula and calculate the result

Multiply! Multiply this number by a few parts

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1. How to calculate the fraction of 3 / 4 + 5 / 3? I don't know how to calculate in detail except addition, subtraction, multiplication and division How to calculate the fraction of 3 / 4 + 5 / 3? I don't know how to calculate the addition, subtraction, multiplication and division. Thank you!
2. What's the percentage of that? Please write it as clearly as possible, and the intermediate process is addition, subtraction, multiplication and division
3. 0.6 = percentage = percentage: 35 = 6 divided by percentage = percentage = discount = percentage
4. 6 out of 18 = () divided by () = what fraction; 1 out of 6 = 2 divided by () = () divided by 30 = () divided by ()?
5. What is 11 divided by 22
6. 1 = how much divided by how much = fractions = fractions = fractions
7. A fraction divided by a fraction How to express in complete language~ Example: (1) 1 / 2 × 5 means 1 / 2 of 5~ (2) 3 × 3 / 4 is the number of three 3 / 4 Because I can only express multiplication, not division, 7 / 6 △ 2 / 3 means ()
8. 8 out of 12 = fraction divided by 3 = 24 out of 36 = 12 out of 18
9. How many parts is 16 out of 17 minus 5 out of 18
10. A parallelogram has a base of 24cm and a height of 11cm. How many times is the base of the parallelogram and how many parts is the height of the parallelogram?
11. What fraction is 2.25
12. We know that a full score of 100 points, 60 points for pass, 80 points for excellent. College entrance examination mathematics paper full score of 150 points, then at least how many points for pass, one We know that a full score of 100 is a pass, 60 is a pass, and 80 is an excellent. A full score of 150 is a pass. At least how many points is a pass? A classmate has 117, is he excellent
13. Full score of 120 papers, test 111 points, equivalent to 100 papers how many points?
14. One-18 is a fraction
15. What fraction is 18.75
16. Find the limit Lim 2x ^ 2-5x + 2 / x ^ 2-x-2 x = 2
17. (cot30°-√3)(cos5°+sin5°)(cos5°-sin5°) evaluation
18. -What are the values of sin π / 6 and sin 5 π / 6 respectively -What are the values of sin π / 6 and sin 5 π / 6 respectively? - what are the values of cos π / 6 and COS 5 π / 6 respectively
19. (cot20 ° - √ 3) (cos5 ° + sin5 °) (cos5 ° - sin5 °) calculation
20. (cot20°-√3)(cos5°+sin5°)(cos5°-sin5°)