The product of 5 times a plus a minus 18 times 2 is equal to 139

5xA+(A-18x2)=139 5a+（a-18）*2=139
5xA+A-36=139 5A+(2A-18x2)=139
6xA-36=139 7A-36+36=139+36
6xA-36+36=139+36 7A=175
6xA=175 A=25
A = 175 divided by 6
A = 29 and one sixth

RELATED INFORMATIONS

1. It is known that z = I-1 is a root of the equation Z ^ 2 + ax + B = 0. 1) find the value of real numbers a and B. 2) conjecture the equation by combining WIDA's theorem And prove it
2. Let a and B be the two real roots of the equation x ^ 2-2x-4 = 0. Find a ^ 2 + 2B
3. It is known that AB is two parts of the equation x ^ 2-7x + 9 = 0 and a
4. Let the equation x 2 + (AX) 2-7x-7ax + 2A + 12 = 0 have two equal roots and find the value of A
5. The equation 5x-3 = 7x + 2 can be transformed into () a.5x+7x=2+3 b.-3-2=7x-5x c.5x-7x=2-3 d.3-2=7x-5x
6. The following equation is transformed into 5x-2 = 7x + 8, and the result is as follows 5x-2 = 7x + 8, we get 3x + 20 = 4x-25 1-3 / 2x = 3x + 5 / 2
7. If the solution of equation 5x + 10 / 3 = 0 is the same as that of equation 3x + a whose absolute value = - 1, then what is a? (use the solution of equation) If the solution of equation 5x + 10 / 3 = 0 is the same as that of equation 3x + a whose absolute value = - 1, then what is a? (use equation solution)
8. 7x-2=5x-4
9. 4.5X + 8 = 7x to solve the equation There are also tests
10. The sum of two squares of equation x - 3x + 2 = 0 is A1, the sum of two squares of equation x + 7x + 12 = 0 is A2, and the sum of two squares of equation x - 11x + 30 = 0. Thank you, The sum of two squares of equation x - 3x + 2 = 0 is A1, the sum of two squares of equation x + 7x + 12 = 0 is A2, the sum of two squares of equation x - 11x + 30 = 0 is A3 The sum of the square of equation x + (- 1) times (4N-1) x + 2n (2n-1) = 0 is an. Try to find a1 + A2 + The value of A2008
11. 7 times 12 minus 3 x is equal to 24, the process of solving the equation is written completely
12. It is known that the lengths of two right angles of a right triangle are exactly the two roots of the equation 2x-3x-2 = 0 (1) The sum of the lengths of the two right angles of this right triangle (2) The area of this right triangle
13. The two right sides of a right triangle are the two roots of the equation x-7x + 12 = 0 What is the radius of the circumcircle of this right triangle
14. Given that the lengths of two sides of a right triangle are two of the equations x2-7x + 12 = 0, then the length of the third side is______ ．
15. If the equation 6x + 5y-2 on X Y is the same as 3rx-2ry + 4R = 0, and there is no y term after merging the class term, the value of R can be obtained
16. If the equation 6x + 5y-2-3rx-2ry + 4R = 0 about X and Y does not contain y term after merging the similar term, the value of R is obtained
17. It is known that (M2-1) X2 - (m-1) x + 8 = 0 is a linear equation of one variable with respect to x, and its solution is n (1) Find the value of the algebraic formula 200 (M + n) (n-2m) - 3M + 5 (2) Finding the solution of the equation m y = n about y
18. The equation (m-1) x + (m-1) y = 0 is a bivariate linear equation when m =? And a univariate linear equation when m =
19. If the equation (m ^ 2-1) x ^ 2 - (m-1) x + (2m + 1) Y-3 = 0 is a bivariate linear equation, then the value of M is (if the equation is a univariate linear equation, then the value of M is?
20. The equation (M & # 178; - 4) x & # 178; + (M + 2) x + (M + 1) y = m + 5 about X is known? (2) What is the value of M?