Work Step by Step
Given: $x+y=7$ and $x-y=-1$ After adding the given two equations, we have $2x=6$ or, $x=3$ Now, $3+y=7$ or, $y=7-3=4$ Thus, $x=3,y=4$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.