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It is known that the solution of the equation 1 / 2 (1-x) = 1 + K and the solution of the equation 4 / 3 (3x + 2) = 10 / K-2 / 3 (x-1) about X are opposite to each other, and the value of K can be obtained
1 / 2 (1-x) = 1 + k1-x = 2 (1 + k) = 2 + 2kx = - 2k-14 / 3 (3x + 2) = 10k-2 / 3 (x-1) 3x + 2 = 3 / 4 [10k-2 / 3 (x-1)] 3x + 2 = 15K / 2-1 / 2 (x-1) 6x + 4 = 15K - (x-1) 7x = 15k-3x = 15K / 7-3 / 7, so 15K / 7-3 / 7 = - (- 2k-1) = 2K + 115k-3 = 14K + 7K = 10
RELATED INFORMATIONS
- 1. It is known that the solution of the equation 2 / 1 (1-x) = 1 + K and the solution of the equation 4 / 3 (x-1) - 5 / 2 (3x + 2) = 10 / K-2 / 3 (x-1) are opposite to each other, so the value of K can be obtained
- 2. It is known that the sum of the solutions of the equation 1 / 2 (1-x) = 1 + K and 3 / 4 (x-1) - 2 / 5 (3x + 2) = K / 10-3 / 2 (x-1) is 0 It is known that the sum of the solution of the equation 1 / 2 (1-x) = 1 + K and the solution of 3 / 4 (x-1) - 3 / 5 (3x + 2) = 1 / 10k-3 / 2 (x-1) about X is 0. To find the value of K, we need the whole analytical process of the equation
- 3. If the solution of the equation 2x KX + 1 = 5x-2 is 2, then the value of K is?
- 4. If the solution of the equation 2x-kx + 1 = 5x-2 is - 1, then the value of K is______ ．
- 5. (1) What is the quotient of the sum of 14 and 18 in addition to their difference? (2) Eight times of a number plus 6.8 equals 60% of 74. What's the number? (solved by equation)
- 6. The difference between two times and three fifths of a number is equal to the difference between one and three fifths of a number. What is the number
- 7. 1. What's 1 / 2 of 5 / 3? 2. 5 / 6 of a number is equal to the sum of 3 1 / 7. What's the number? (use equation solution) .
- 8. How to solve the equation that 2x-1 / 3 equals 5 / 6?
- 9. Solving the equation 2 out of 5 plus 3 out of 5 equals 1
- 10. How to solve this equation
- 11. Try two methods to solve the equation 2 (2x-1) - 4 (x + 1) = 3 (x + 1) - 5 (2x-1) There must be two
- 12. 2 (2x - 1) - 4 (x + 1) = 3 (x + 1) - 5 (2x - 1)
- 13. 3 [2 (1-2x) - 1] - 1 = 5 two methods are used to solve the equation
- 14. There is a piece of iron wire. The first time you use half of it is less than 1 meter, and the second time you use the remaining half is more than 1 meter. At this time, there are still 3 meters left. How long was the iron wire originally? Using equation
- 15. There is a piece of iron wire. For the first time, more than half of it is used. For the second time, the remaining half is less than 1 meter. At this time, there are still 3.5 meters left. How long is the original length of the iron wire?
- 16. Two ropes of the same length, one used 1 / 3 of the rope, the other used 1 / 3 of the rope, compared with the remaining wire
- 17. Three fifths of the length of a piece of rope is used for the first time, and the rest is one-half of the length used. How long is the length of this piece of rope?
- 18. For a piece of wire, three fifths of a meter is used for the first time, and then the rest is two tenths of a meter less than the one used A vegetable base, in which 5% of 1 kind of cabbage, 10% of 3 kinds of cucumber, the rest of the beans?
- 19. There is a 20 meter long rope, which is divided into four meter long segments. How many segments do you need?
- 20. A three fifths long rope is cut into the same six segments, each segment is () meters long, and each segment is a fraction of the total length