Answer:
5
Step-by-step explanation:
This means that 9/(2x-1)=15/(3x), so 27x=30x-15. This means that 3x=15, so x=5.
Answer:
A, C, D
Step-by-step explanation:
Solve all equations:
A. 

This is incorrect equality, so the equation has no solutions.
B. 

This is correct equality, so the equation has infinitely many solutions.
C. 

This is incorrect equality, so the equation has no solutions.
D. 

This is incorrect equality, so the equation has no solutions.
Answer: FIRST OPTION.
Step-by-step explanation:
First, it is important to remember that the Slope-Intercept form of the equation of a line is the shown below:

Where "m" is the slope of the line and "b" is the y-intercept.
By definiton, given a System of Linear equations, if they are exactly the same line, then the System of equations have Infinely many solutions.
In this case you have the following System of Linear equations given in the exercise:

So, since you need the system has Infinite solutions, you know that the slope and the y-intercept of both lines must be equal.
Therefore, you can identify that the value of "a" and "b" must be the following:

So the Linear System would be the shown below:

Answer:
x=100
Step-by-step explanation:
23+.10x=19+.14x
God bless!