4X plus 30% x = 12.9

RELATED INFORMATIONS

• 1. The solution of equation 12-3 (x-1) = 9 is x =?
• 2. How to solve the equation 12 (x + 2.9) = 144? Better be concise~~
• 3. How to solve equation 12 + X + (12x + X-9) = 95
• 4. Solve the equation X-1 / 1-10% = x-0.9/0.92
• 5. X-9 = (x + 9) division 3 equation solution
• 6. To help solve an equation, you need to take specific steps. (x-90) / 9 = (x + 39 * 10) / 39
• 7. Solve an equation: 40% x + (40% X-10) + 30 = X
• 8. How to solve these equations 2. Percentage of completed plan = [] divided by [] 3. What percentage of the total revenue is the amount of expenditure = [] divided by [] 4. Qualified rate of product = [] divided by [] * 100% 5. The pass rate of a language test of a class is divided by 100% 6. Flour yield of wheat = [] divided by [] * 100% 7. Salt content of brine = [] divided by [] * 100%
• 9. How to solve the equation of 30% x + 21 = x
• 10. Several math problems should be solved by equations before 9:30 Someone originally planned to ride from place a to place B at the speed of 12 kilometers per hour, so that he could arrive at the specified time. However, he delayed the original planned departure time by 20 minutes, so he had to go at the speed of 15 kilometers per hour. As a result, he arrived at place B 4 minutes earlier than the specified time, and calculated the distance between ab A 3-meter-long iron wire is divided into two sections, making a square and a rectangular frame. It is known that the ratio of the length and width of the rectangle is 2:1, and the length of the rectangle is 0.3m more than the side of the square. Calculate the side length of the square, the length and width of the rectangle, and their respective areas Xiaobin he Xiaoming runs every morning. Xiaobin runs 4 meters and Xiaoming runs 6 meters 1. If they run at both ends of the 100 meter track at the same time, they will meet in a few seconds 2. If Xiaoming stands at the starting point of the 100 meter track and Xiaobing stands 10 meters in front of him, he can catch up with Xiaobing in a few seconds
• 11. Solve the following equation: x-x / 12 = 9
• 12. How to solve the equation 2 / x = x ^ 2 + 2x; X ^ 2 is the square of X How to solve the equation 2 / x = x ^ 2 + 2x; X ^ 2 is the square of X
• 13. How to solve the equation 2x + 4 (x + 5) = 44?
• 14. How to solve the equation 2X-4 [X-15] = 18?
• 15. How to solve the equation 15.3-x + 1.2x = 11.5?
• 16. Solve the equation 1.2x-30 * 0.4 = 0
• 17. The solution of 30 + 30 + 2x = 158 equation
• 18. The solution of equation 36-2x = 30
• 19. How to solve the equation 2x + (9-x) = 28?
• 20. Solving equation (2x + 5) ^ 2 - (2x + 1) ^ 2 = 25 (1-x)