posted by BB on .
Solve the following system by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
first you have to place the -5x on the same side as the y... and it becomes a positive
then you multiply it by -2
then it is -10x-2y =-6
add it to 10x+2y = 7
you will see that 0 does not = 1, so therefore it has NO SOLUTION
as to whether its dependent or inconsistent... uhm, there should be something in the text that explains that :]
The equations are inconsistent. Both cannot simultaneously be true.