SOLUTION: 3x-y=-13 2x+y=-9

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Question 211951: 3x-y=-13
2x+y=-9
Answer by drj(1380) About Me  (Show Source):
You can put this solution on YOUR website!
3x-y=-13
2x%2By=-9

The following solves the system of equations by substitution.

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++3%5Cx+%2B+-1%5Cy+=+13%2C%0D%0A++++2%5Cx+%2B+1%5Cy+=+-9+%29%0D%0A++We'll use substitution. After moving -1*y to the right, we get:
3%2Ax+=+13+-+-1%2Ay, or x+=+13%2F3+-+-1%2Ay%2F3. Substitute that
into another equation:
2%2A%2813%2F3+-+-1%2Ay%2F3%29+%2B+1%5Cy+=+-9 and simplify: So, we know that y=-10.6. Since x+=+13%2F3+-+-1%2Ay%2F3, x=0.8.

Answer: system%28+x=0.8%2C+y=-10.6+%29.



I hope the above steps were helpful.

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Good luck in your studies!

Respectfully,
Dr J