If fraction (3x + 5) / (X-2) = 1, then the value of algebraic expression (x-3) (2x-7) is?

If fraction (3x + 5) / (X-2) = 1, then the value of algebraic expression (x-3) (2x-7) is?

(3x+5)/(x-2)=1
3x+5=x-2
2x=-7
x=-7/2
The denominator X-2 = - 7 / 2-2 = - 11 / 2 ≠ 0, x = - 7 / 2 is the solution of the equation
(x-3)(2x-7)
=(-7/2 -3)[2(-7/2) -7]
=(-13/2)(-14)
=91

Predigested fraction (3x / x-1-x / x-1) division X / X-1 Next, from the solution set of the inequality system X-6 (X-2) greater than or equal to 2.4x-2 and less than 5x + 1, take a suitable value and find the original fraction

The original formula = [3x / (x-1) - X / (x-1)] / [x / (x ^ 2-1)]
=[2x/(x-1)]/[x/(x+1)(x-1)]
=2x+2
Solving inequality system: X-6 (X-2) ≥ 2. (1)
4x-2

The absolute value of x-3 / x ^ 2-2x-3 is - 3 / x ^ 2-2x-3

When x? - 2x-3 ≠ 0, the original fraction is meaningful
（x-3）（x+1)≠0
x≠3、x≠-1
When x is not equal to 3 and - 1, the fraction is meaningful

When is the value of the fraction 0? When is the fraction meaningful? When is the fraction meaningless?

The numerator is 0 and the denominator is not 0, and the fraction is 0
Denominator is not 0, fraction meaningful
The denominator is 0 and the fraction is meaningless

The condition that the fraction is meaningful is the condition that the value of the fraction is zero, and the condition that the value of the conditional fraction is positive is that the value of the conditional fraction is negative

A fraction is meaningful if the denominator is not 0
The condition for a fraction to be meaningless is that the denominator is 0
If the value of fraction is 0, the conditional numerator is 0, and the denominator is not 0
If the value of a fraction is a positive number, the denominator and denominator are the same sign
If the value of the fraction is negative, the denominator is different (the numerator is positive, the denominator is negative, and the denominator is positive)

In fraction a of fraction B, when (), the fraction is meaningful; when (), the fraction is meaningless; when (), the value of fraction is 0

In fraction a of fraction B, when B ≠ 0, the fraction is meaningful;
When B = 0, the fraction is meaningless
When a = 0 and B ≠ 0, the value of fraction is 0

May I ask the gods: what is the condition that makes a fraction zero? What is the condition that makes a fraction meaningful? What is the condition that makes a fraction meaningless? What's more, I'm going to take a high school entrance exam tomorrow. If I encounter a problem that won't work, which aspect should I go to?

1. The molecule is 0
2. Denominator is not 0
3. Denominator is 0
High school entrance examination is calm
Make sure the title of the meeting is right
No, try to change your mind
In particular, multiple choice questions do not have to use conventional methods
If you can't, just write whatever you can
Don't be empty and just calm down
It's better to reread the questions that you can't to see if there are any missing conditions

The square of fraction x is - 3 / 2. When the letter satisfies what conditions, the fraction is meaningful

This fraction is a function expressed by an expression, and its natural domain can be found. If the fraction is meaningful, then x ^ 2-2 ≠ 0, that is, X ≠ root 2 and X ≠ negative root 2

X-m is x + m (M is not equal to 0). What conditions do the letters meet in this fraction to make the fraction meaningful?

For fractions: (x + m) / (x-m)
When x-m ≠ 0, i.e
x≠m
The fraction is meaningful
I'm very happy to solve the above problems for you, and hope it can be helpful to your study

If we enlarge X and Y in the fraction 2x-3y by 5 times, then the value of this fraction ()

If the fraction 2x-3y is divided into 2Y and y by 5 times, then the value of the fraction (also 5 times larger)
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