Is the result of 6 (2-5x) - 3 (x) 6 (2-7x) or 2-7x?

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• 1. Solution equation: 5x-2 = 7x + 8
• 2. 5x + 2 = 7x-8, shift term to 7x-5x = - 8 + 2 Why did the plus sign go to the back when it was in the front and a minus sign was added to the front of 8? Why didn't the plus sign go to the back instead of the front
• 3. The solution of 5x-8 = 7x + 1 is?
• 4. 32-7X-5X=30
• 5. If 5x + 9 = 24, then the value of 7x + 8x is
• 6. To solve the equation 2x out of 3-5X = 1
• 7. Is there a simple way to solve the equation X-13 / 26x-7 = 2-3 / 2x?
• 8. How to solve the equation 2x / 3-26x-5 / 13 = 2-1 / 3x
• 9. 2 / 3 X-1 / 5 x = 1 solution
• 10. 3 / 2x + 6 / 1X = 9 / 4 solution equation
• 11. 1.3 of 1 (6 + x) = 2.82.9 * 3-1.7x = 13.4
• 12. 1. In the three numbers 1, - 2,2 / 1, the solution of 7x + 1 = 10-2x is () 2. If x = 5 is the solution of the equation AX + 5 = 10-4a, then a = () 3. Three times of a certain number is two times larger than half of it. If a certain number is y, then the equation is ()
• 13. How to solve 7x + 18 = 2x
• 14. In class, the teacher gave you such a question: "known 5a-2x + 3 = 0, 4b-7x-21 = 0 If a is less than 6 and less than or equal to B, find the value range of X
• 15. How to do 18-7x = 2x-9
• 16. 8-7x=4+2x
• 17. 7x-6=2x+8
• 18. We know that the product of a polynomial and the monomial - 7x & # 178; Y & # 179; is The fourth power of 21x, the fifth power of Y minus the seventh power of 28x, the seventh power of y plus the sixth power of 14x, the sixth power of Y, try to find this polynomial
• 19. Given that the product of a polynomial and the monomial - 7x ^ 5Y ^ 4 is 21x ^ 5Y ^ 4-28x ^ 7Y ^ 4 + 7Y (2x ^ 3Y ^ 2) ^ 2, find the polynomial
• 20. Given that x = 1 is the solution of the equation mx-n-4x = 3 about X, what is the value of m-n. if the root of the equation 9x-a = 0 about X is A-1, what is the value of A-1 / a Help. I'm in a hurry