When there are two unknowns or more unknowns in a linear equation of one variable, For example: 4 / 2x = 5x - 3 Find x

When there are two unknowns or more unknowns in a linear equation of one variable, For example: 4 / 2x = 5x - 3 Find x

Merge congeners
4 / 2x = 5x - 3
2x=5x-3
3x=3
x=1

How to solve two unknowns of linear equation with one variable
（m-1）x+2=0
(x has a square of m above it)
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You don't have enough information on this topic
Generally speaking, there are enough conditional information for you to determine the value of M
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What does it mean to have a square of m over x?

The solutions of the equations {ax by = 4 ax + by = 2 {2x + 3Y = 4 4x + 5Y = 6} with X and y as unknowns are the same. Try to find the values of a and B
The system of equations with X and y as unknowns {ax by = 4}
Ax + by = 2 and {2x + 3Y = 4
The solution of 4x + 5Y = 6 is the same. Try to find the value of a and B

Y = 2, x = - 1, a = - 3, B = - 0.5

Given that the | K | - 1 power-2y = 3 of (K-2) x is a quadratic equation of two variables, then K=__

|k|-1=1
|k|=2
k=2 or k=-2
∵ is a quadratic equation of two variables
k-2≠0
k≠2
∴k=-2