Ask your own question, for FREE!
Mathematics
OpenStudy (anonymous):

Solve the system by substitution: 2x-y=5 -2x+y=7

8 years ago
OpenStudy (anonymous):

from the first equation we get 2x = y+5 substitute that in the second equation to get -(y+5)+y =7 solve for y and plug it back in one of the original equations to find the value of x

8 years ago
OpenStudy (anonymous):

Can you help with please??

8 years ago
OpenStudy (anonymous):

with what?

8 years ago
OpenStudy (anonymous):

Solving

8 years ago
OpenStudy (anonymous):

there is no solution to this.

8 years ago
OpenStudy (anonymous):

OK thanks

8 years ago
OpenStudy (anonymous):

you are welcome

8 years ago
OpenStudy (anonymous):

you get -5 = 7 which is silly, hence this system of equations doesnt have a solution. notice that the slopes of the two lines are the same. this means they are parallel. this means they have no point of intersection and hence no solution

8 years ago
OpenStudy (anonymous):

Thank you''

8 years ago
Can't find your answer? Make a FREE account and ask your own question, OR you can help others and earn volunteer hours!