SOLUTION: 5y-20=7x 20y=28x+40

Question 1085441: 5y-20=7x
20y=28x+40
Answer by ikleyn(52784) (Show Source): You can put this solution on YOUR website!
.

Let me re-write your equations in this equivalent standard form:

 7x -  5y = -20,    (1)
28x - 20y = -40.    (2)


Now, I see that the second equation has the coefficients proportional to that of the first equation with 
the proportionality coefficient 4.

But the right sides are not in this proportion.


It means that the system IS NOT CONSISTENT. In other words, it has no solutions.

See the lesson
- Geometric interpretation of the linear system of two equations in two unknowns
in this site.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lesson is the part of this online textbook under the topic
"Systems of two linear equations in two unknowns".

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