It is known that the correct solutions of the binary linear equations ax-2by = - 1 and CX + y = 3 about X and y are x = 3 and y = - 1, but student a misread C when doing the problem, and the solution is X = - 1 and y = 3, find the value of a and C

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• 1. It is known that the solution of the system of equations ax + by = 5, cx-2by = 8 is x = 5, y = - 3. A classmate misread the value of C, and the solution is x = - 3, y = 3. Try to determine the value of a, B and C
• 2. If the solutions of the binary linear equations {ax + 2by = 4, x + y = 1} and {X-Y = 3, BX + (A-1) y = 3 are the same, the values of a and B are obtained
• 3. Given that the solution of the system of equations ax + by = C, ex + dy = f for XY is x = 3, y = 2, what is the solution of the system of equations a (X-Y) + B (x + y) = C, e (X-Y) + D (x + y) = f for X and y?
• 4. To solve the equations: ①: ax + by = 1; ②: CX + dy = - 1 Because a misread C, we get x = - 19 / 6, y = - 3 / 2; because B misread D, we get x = - 6, y = - 19 / 7, we find the value of a and B
• 5. Students a and B solved the system of equations ax + by = 3 cx-2y = 5 A with respect to XY, and the correct solution is Students a and B solve the system of equations about XY AX+BY=3 Cx-2y = 5 a gets the correct solution as x = - 1, y = - 3, B copies the wrong value of C, x = 5, y = 6 finds the value of a / C + ab
• 6. We know the binary linear equations ax + by = - 16 CX + 20Y = - 224 about X and Y. the solution of the binary linear equations is x = 8, y = - 10. A student copied C wrong in his solution, and all other solutions are correct. He solved x = 12, y = - 13, and solved a + B + C
• 7. Given the same solution of the system of equations x + y = 3, ax + by = 4 and ax-2by = 22, X-Y = 7, find the value of 3a-16 Quadratic equation of two variables, done tonight
• 8. If the solution of the system ax + by = C, a # x + B # y = C # is X3, y = 4, find the solution of the system 3ax + 2by = 5C, 3a # x + 2B # y = 5C #
• 9. Given that a = 2x & # 178; + 3ax-2x-1, B = - X & # 178; - ax + 1, and the value of 3A + 6B has nothing to do with X, find the value of a?
• 10. A = 2x & # 178; + 3ax-2x-1, B = - X & # 178; + AX-1, and the value of 3A + 6b is independent of X, the value of a can be obtained I also want you to explain why it is calculated like this=
• 11. It is known that the solution of the system of linear equations y + my = 4 NX + 3Y = 2 with respect to x, y is x = 1, y = - 3, and the value of M + n is obtained
• 12. Given the solution x = 4 y = - 3 of the system of linear equations x + my = 4 NX + 3Y = 2, we can find the value of M + n
• 13. On the system of equations 2x-my = 25, x = 3Y of X, y, the solution is a positive integer
• 14. Xiao Ming and Xiao Wen solve a system of linear equations of two variables {cx-3y = - 2 ax + by = 2, Xiao Ming correctly solves x = 1 y = - 1, and Xiao Wen wrongly copies the solution of C to get x = 2 y = - 6 It is known that there is no other error except for copying error C in Xiaowen. Find the value of a + B + C
• 15. Xiao Ming and Zhang Fan solve a system of quadratic equations ax + by = 16 (1) BX + ay + 1 (2) Xiao Ming miscopies equation 1 and obtains the solution as x = - 1, y = 3 Zhang Fan copied equation 2 wrong and got the solution as x = 3, y = 2
• 16. It is known that the solution of binary linear equations ax by = 6, BX + ay = 17 is x = 4, y = 3, then a = B=
• 17. The third power of a * the third power of 2A * the third power of 3A
• 18. If the quadratic equations 3x-7 = 0, 2x + 3y-1 = 0 and 2x + y-m = 0 have common solutions, then the value of? Is?
• 19. a. If B is a positive number and the equation x square + 2bx + a = 0 and x square + ax + 2B = 0 have a common root on the X axis, what is the minimum value of a square + b square
• 20. Given that two equations x2 + 2bx + a = 0 and X2 + ax + 2B have and only have one common root, then the minimum value of A2 + B2 is