Equation 2 - (2x-3 / 4) = X-6 / 7, get () A、2-2(2x-4)=-(x-7) B、12-2(2x-4)=-12x C、12-2(2x-4)=-(x-7) D、12-(2x-4)=-(x-7)
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- 1. Given that equation 2x + 7 = - 3 has the same solution as equation 2-3 / 3m-x = 0, find M
- 2. Given that x = 1 is the solution of the equation 2-third (M + x) = 2x, then the solution of the equation m (x-3) - 2 = m (2x-5) about X is x =?
- 3. (1) When the equation 2x + M = 3 and x-one-third = one-third m of X have equal solutions, how to find the value of M? (2) When m is a value, the solution of the equation 5x + 4m = two-thirds + X is 3 less than that of X (M + 2) = m (x + 2) (3) When m is an integer, the solution of the equation 2mx = (M + 1) x + 6 is a positive integer
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- 8. It is known that a, B and C are not collinear, and a point m outside the plane ABC satisfies the vector om = 1 / 3 vector OA + 1 / 3 vector ob + 1 / 3 vector OC It is known that a, B and C are not collinear, and a point m outside the plane ABC satisfies the vector om = 1 / 3 vector OA + 1 / 3 vector ob + 1 / 3 vector OC (1) Judge whether the three vectors Ma, MB and MC are coplanar; (2) Judge whether point m is in plane ABC
- 9. Two numbers are composite numbers, their greatest common factor is 1, and their least common multiple is 36. What are these two numbers? What is the minimum number of 1 after a number is divided by 3, 5, and 7? Come on, come on, come on
- 10. As shown in the figure, in the diamond ABCD, ∠ ABC = 60 ° de ‖ AC intersects the extension line of BC at point E
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- 13. How to solve the equation that 2x-1 / 3 equals 5 / 6?
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- 15. The difference between two times and three fifths of a number is equal to the difference between one and three fifths of a number. What is the number
- 16. (1) What is the quotient of the sum of 14 and 18 in addition to their difference? (2) Eight times of a number plus 6.8 equals 60% of 74. What's the number? (solved by equation)
- 17. If the solution of the equation 2x-kx + 1 = 5x-2 is - 1, then the value of K is______ .
- 18. If the solution of the equation 2x KX + 1 = 5x-2 is 2, then the value of K is?
- 19. It is known that the sum of the solutions of the equation 1 / 2 (1-x) = 1 + K and 3 / 4 (x-1) - 2 / 5 (3x + 2) = K / 10-3 / 2 (x-1) is 0 It is known that the sum of the solution of the equation 1 / 2 (1-x) = 1 + K and the solution of 3 / 4 (x-1) - 3 / 5 (3x + 2) = 1 / 10k-3 / 2 (x-1) about X is 0. To find the value of K, we need the whole analytical process of the equation
- 20. It is known that the solution of the equation 2 / 1 (1-x) = 1 + K and the solution of the equation 4 / 3 (x-1) - 5 / 2 (3x + 2) = 10 / K-2 / 3 (x-1) are opposite to each other, so the value of K can be obtained