Question 126599
Question:

Solve each of the following systems by substitution.

8x - 4y = 16
 y = 2x - 4


Answer:

Given equations are, 

8x - 4y = 16

y = 2x - 4


substitute the value y = 2x-4 in the first equation...


8x - 4(2x - 4) = 16


==> 8x - 4*2x - 4*4 = 16


==> 8x - 8x - 16 = 16

==> -16 = 16, which is not a true statement...


So the given system equation has no solution..



Hope you found the explanation useful.


Regards.


Praseena.