2*(x+2x)=54
2*(x+2x)=54
2*3x=54
6x=54
x=54-6
x=9
RELATED INFORMATIONS
- 1. What kind of equation is obtained by translating the linear equation 2x-y + 4 = 0 down 3 units? How about y = 2x + 4 moving down 3 units?
- 2. 2X+15=54
- 3. Given that the root of equation 2x-7 / 8 (x + a) + 1 / 6 (x-a) = 8 is four times larger than that of equation 1 / 2-x-3 / 3 = 1, find the value of A
- 4. If the roots of the equation lgx = 8-2x x ∈ (k, K + 1), K ∈ Z, then k = () A. 2B. 3C. 4D. 5
- 5. Explore the value of a, so that the root of the known equation 2x + a = 7 + X is (1) positive number; (2) positive even number
- 6. When a = (), the solution of equation a (x-1) = 2X-4 is x = 3
- 7. The solution equation: 4 (X-2) (x + 5) - (2x-3) (2x + 1) = 5
- 8. It is known that the solution of the equation 1 / 2x = - 2 about X is 2 smaller than that of the equation 5x-2a = 0 about X. try to solve the equation 1 / ay-15 = 0 about y
- 9. How much is root 1.2 times root 54 times root 0.6
- 10. X * y is 4x + 5Y divided into axy, and 1 * 2 = 1, find the value of 2 * 3 There must be an operation process, and every step must have one
- 11. How to solve the equation: 2x + 4 (21-x) = 54?
- 12. After the line y = 2x is translated 2 units along the positive direction of X axis, the expression is?
- 13. If x = - 2 is the root of the equation - ax + B = - 1 - 2x, what is the value of the algebraic expression 4A + 2B + 1
- 14. If x = - 2 is the root of the equation: 2x2-ax-b = 3-2x, then 3-4A + 2B=______ .
- 15. If x = - 2 is the equation - ax + B = - 1-2x, then the value of the algebraic expression 4A + 2B + 1 is
- 16. If the root of the equation for X: 2x ^ 2-ax-b = 3-2x is - 2, then 3-4A + 2B =? As soon as possible! ^This symbol is To the power of
- 17. Given that x = 1 is the solution of the equation 2x-2 = 1 / 3 (x-a), what is the solution of the equation a (y + 4) = 2ay + 4A about y?
- 18. If the solutions of the equation X-1 / 3-1 = 3x-2x + 1 / 2 and the equation x + 6x-a / 3 = A / 2x are reciprocal, the value of a is obtained
- 19. It is known that the solutions of the equations (x-m) / 2 = x + m / 3 and (2x + 1) / 3 = 3x-2 about X are reciprocal to each other, and the value of M is obtained
- 20. 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