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

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• 1. The solution of 5x-8 = 7x + 1 is?
• 2. 32-7X-5X=30
• 3. If 5x + 9 = 24, then the value of 7x + 8x is
• 4. To solve the equation 2x out of 3-5X = 1
• 5. Is there a simple way to solve the equation X-13 / 26x-7 = 2-3 / 2x?
• 6. How to solve the equation 2x / 3-26x-5 / 13 = 2-1 / 3x
• 7. 2 / 3 X-1 / 5 x = 1 solution
• 8. 3 / 2x + 6 / 1X = 9 / 4 solution equation
• 9. The solution equation is: 4 (X-13) = 23 + X (6.3-3.8 △ 2 + 2.7) × 3 = 9.912.6-2.2x = 3.1x-4.36 4（x－13）＝23＋x （6.3-3.8÷2+2.7）×3＝9.9 12.6-2.2x=3.1x-4.36 What's the formula
• 10. How to solve the equation that 1 minus 1 / 6 equals 1 / 2
• 11. Solution equation: 5x-2 = 7x + 8
• 12. Is the result of 6 (2-5x) - 3 (x) 6 (2-7x) or 2-7x?
• 13. 1.3 of 1 (6 + x) = 2.82.9 * 3-1.7x = 13.4
• 14. 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 ()
• 15. How to solve 7x + 18 = 2x
• 16. 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
• 17. How to do 18-7x = 2x-9
• 18. 8-7x=4+2x
• 19. 7x-6=2x+8
• 20. 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