Seudónimo Seudónimo

25-04-2017
Mathematics

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14x − 2y = 46
−7x + y = −23
Use substitution.
How do you solve this?
Please help and thank you! :)

Respuesta :

25-04-2017

from the second we can find:

y=7x-23

Now using this value of y in the first equation you have:

14x-2(7x-23)=46

14x-14x-46=46 which is always true meaning that there are infinitely many solutions.

Basically both equations describe the same line so every point on the line is a solution...

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