7x + 65 = 107 to solve the equation

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• 1. Solve the equation 4 / X-8 / x + 2 = 1, remove the denominator, get () and get ()
• 2. In solving the equation 2x-1 / 3 = x + A / 2-1, when the denominator is removed, both sides multiply by 6 at the same time, but THE-1 on the right side of the equation forgets to multiply by 6, so the solution obtained is x = 4. Try to find the value of a and correctly find the solution of the original equation
• 3. Solving equation (denominator removed) 1.2 of 1 x-3 = 5 of 1 x 2.2x-3 of 1 = - 3 of X + 2 3.3 of 2x-1 = 4 of X + 2-1 Solving equation (denominator removed) 1.2 x-3 = 5 x 2.2x-3 1 = - 3 x + 2 3.3 2x-1 = 4 x + 2-1 4.3x + 2 X-1 = 3-3 2x-1 5.0.3 2x + 4-0.4 x-3 = - 100 6.1.2 of 0.2x + 0.6 + 0.3 of 0.1X = 4-0.2 of 0.1x-0.1
• 4. How to do 18-2 (3-4x) = 10x
• 5. 35x + 26x - xsquare = 60,
• 6. Define the operation *, the rule is a * b = (a + b) / 2, find the solution of equation 3 * (x * 2) = 1
• 7. How to solve the equation X-2 / 5 + 40 = 7x-10 / 10
• 8. Solve the equation 4x-3y = 7, X-1 / 3 = 2Y + 3 / 4, please
• 9. 12+x＝1          x−57＝12          x+23＝1011．
• 10. 3 (x-2.1) = 8.4
• 11. How to solve the equation 7x-36 = 27
• 12. The solution equation is 3.6x-x = 0.52 Hurry, hurry
• 13. (7x-10y)-(-10y-5x)=?
• 14. Solution of cubic linear equations: X / 3 = Y / 4 = Z / 5,7x + 3y-5x = 16 solution! Request process! Help! The understanding of words is: 3 / x = 4 / y = 5 / Z (1) 7x + 3Y minus 5x = 16 (formula 2)
• 15. {5x-3y=4 x+6y=3 {3x-2y=4 2x-5y=9
• 16. 7X-20=3(X+5)
• 17. How to calculate x-20 = 6 / 7x-5 / 6 And talk about how to deal with this kind of problem
• 18. 0.4(x-0.2)+1.5=0.7x-0.38 solve equations
• 19. Calculation: 1 / (x ^ 2-7x + 10) + 1 / (x ^ 2-x-2) + 1 / (x ^ 2 + 5x + 4) + 1 / (x ^ 2 + 11x + 28) = () Detailed process
• 20. (3/4)(5/6)(15/16）（24/25）…… (2003 / 2004) x ^ 2-2x-1 = 0. Find x ^ 4 + x ^ 3-5X ^ 2-7x + 5 If you add 100 and 168 to a positive integer, you can get two complete squares and find the positive integer