A mathematical problem It takes 20 days for a project to be completed by Party A and Party B, 8 days for Party A and 36 days for Party A to complete the rest. If the rest is done by Party B, how many days will it take Please give a detailed algorithm!

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• 1. Ask some math questions (- 5) - (- 2.5) + (- 1 / 2) (- 5 and 1 / 2) - (4 and 4 / 5) + (- 3 and 1 / 5) + + 2 and 1 / 2) (1.7) - absolute value of negative 4.3 + absolute value of negative 1.7 + (- 6.8) 1-0=( ) 0-1=( ） 0-（-2） a-( )=0 -b-( )=0 The number - 3 less than - 6 is
• 2. (-5p)*2pg=? 2x*5*x=? 1/4m*4n*(-p)=? 6 * 3x divided by 2x * 5 =? 7+m+6+3m=? 8x^+2x+7x^+3x=? Finally, why m + N-M + n = 2n?
• 3. Mathematical problems (super simple) 4 1 4 1 - + - =? -* - =? 7 3 7 3 How much is 4 / 7 times 1 / 3?? 4 out of 7 plus 1 out of 3 = how much??
• 4. Math problem arithmetic problem is very simple 200 - 500 = how much is it to solve a good mathematical answer
• 5. The square of (a + 3) + root (B-1 / 3) = 0, find B / A
• 6. If root 2 = x, then x =? If the root sign x = x, then x =? If the root sign x > x, then the value range of X is________ ? Is the following statement true? A. 5 is the arithmetic square root of 25 B. Plus or minus 5 is the arithmetic square root of 25
• 7. (1) The square root of 1-4 is_______ (2) The arithmetic square root of 121 is_______ (3) The arithmetic square root of (- 4.3) ^ 2 is_______ (4) The inverse of the arithmetic square root of the root sign 81 is______
• 8. A = 1, B = - 2, C = - 3, simplify a + C - A + B + C - B - A + B + C with letters In letters
• 9. If a ≤ 0, simplify a - √ A & # 178
• 10. Is three times the root two a fraction The form should be score But by definition, rational numbers include integers and fractions. Obviously, three-thirds of the root sign two is irrational, so it can't be called fractions···
• 11. A very simple mathematical problem A businessman spent 8 yuan to buy a commodity. After a period of time, he sold it with 9 yuan. After a period of time, he bought it back with 10 yuan. Finally, he thought the commodity was bad, so he sold it with 11 yuan. Excuse me: did the businessman make or lose in this business? If he made, how much did he make? If he lost, how much did he lose?
• 12. A simple mathematical problem I haven't been to school for a long time, so I have no idea My friend asked me a seemingly simple math problem, but I couldn't answer it. It was painful. I felt very simple, but I just couldn't figure it out. I was crying The questions are as follows: My friend and a girl sell things. My friend gives 32, and the girl gives 50. Besides the capital, the profit is 108. How to divide the money? Please answer the formula or method. I mainly want to know the method
• 13. Today there are 100 steps for the good and 60 steps for the bad Follow it. What's the geometric step? I know it's 250 steps, but I don't know how to calculate it Using equation
• 14. Intelligence arithmetic 1\5\5\5 Addition, subtraction, multiplication and division are equal to 24 or - 24
• 15. If a, B and C are the three sides of a triangle, and a & # 178; + B & # 178; + C & # 178; = AB + BC + Ca, try to judge the shape of the triangle and explain the reason
• 16. Factorization of mathematics in Grade Seven
• 17. The product of (x + 1) (X & # 178; + - 5AX + a) does not contain X & # 178; if the term a = () M & # 178; + M-1 = 0, then M & # 179; + 2m & # 178; + 2013 = () (- 2) to the power of 2012 + (- 2) to the power of 2013 = then the questions and answers of the types frequently tested in the examination and the various types frequently explained in detail must be at least 6
• 18. It is known that x belongs to. 0 to 2. What is the range of SiNx + cosx of function y = root 3 times The answer should be - 1 to root 3. I feel that the following two are not right. Who can tell me
• 19. If 1 Δ k = 3, then the range of function f (x) = k Δ x is
• 20. The specified sign "*" represents an operation, that is, a * b = AB + A + B, a, B are positive real numbers, and 1 * k = 7 is known, then the range of function f (x) = k * x is______