2X of 7 = 5 of 28

2X of 7 = 5 of 28


2/7X=5/28
X=5/28x7/2
X=5/8



To solve the fractional equation, we need to test it
Question 1: X-1 Branch 1 + X + 1 branch 2x = 2
Question 2: X-1 branch 6 + X branch 3 = x square - x branch x + 5
I have to write the process, otherwise I can't understand it


The first x = 3, the second x = 0 or 1, this seems to have roots, but I have forgotten that knowledge



What is the Zeng root of the fractional equation x / X (X-2) = 1?
Why is x = 0 not its zenggen?


Increasing root is 0 and 2.0 (0-2) = 0, 2 (2-2) = 0



Is the Zeng root of the fractional equation the root of the fractional equation


No, because Zeng Gen increased the conditions of the problem itself in the process of solving the problem
For example, if the denominator is not zero, the denominator can be zero