The solution of 3 / 10x + 7 / 10 (200-x) = 200 * 27 / 50 So why don't you multiply 200 by 50?

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• 1. Given that the solution of equation 3 (5x-6) = 3-20x is also the solution of equation 3a-10x = 6A + 30x, find the value of A
• 2. How to solve the equation of 10x-x = 3
• 3. Use a suitable method to solve the following equation: (x + 4) square = 5 (x + 4) And (2) (x + 1) square = 4x (3) (x + 3) square = (1-2x) square (4) 2x square - 10x = 3
• 4. By the equation: 7.8x-2.4x = 1.08, 2x-2.8 times 0.5 = 8.96, 2 times (x + 1) = 6
• 5. Both {x = - 2, y = 3 and {x = 2, y = - 1 are the solutions of the equation AX + by = 8
• 6. Given that one root of the equation x ^ 2-6x + C = 0 about X is the square of the other root, find the value of C
• 7. 50 is 10 less than two-thirds of a number. Find the number
• 8. Twenty percent of a number is 14 less than two-thirds
• 9. 1.5 is 0.3 less than two-thirds of a number?
• 10. How to solve the equation of 8x-2.5x = 5.5?
• 11. How to solve 60-10x = 20x-30?
• 12. Solve the following equation 5 (X-2) + 5 = 6x-7
• 13. 6x-12 = 328.5 * 6-x = 24.13 * (x + 3 = 6x-12) help me solve these three equations
• 14. (6x+20)/10x=2/(5－2)
• 15. 1.5x + x = 170 how to solve the equation
• 16. Known equations 2x-y = 7, ax + y = 6 and X + by = a, 3x + y = 8 have the same solution, find the value of a, B!
• 17. X + 1 / 2 = 6 / 7 (solved by equation) 3 / 8-x = 7 / 20 (solved by equation)
• 18. 3.6 is the solution of equation 2.8 + x = 6.4______ (judge right or wrong)
• 19. 6 times of a number is 4.8 times more than 3 times of it
• 20. Three times of a number, 20.5 more than 6.8, find the number. (use equation) How many 205s are subtracted from 2005 to get 160? (using equation) Three fifths of five fifths is 0.1 less than 25% of a number. Find the number