# Answer to Question #5121 in Algebra for Eve

Question #5121

7x + 2y =7

2x + y = -1

2x + y = -1

Expert's answer

7x+2y=7

4x+2y=-2

substract the second equation from the first:

3x=9 => x=3

from the second equation of the system 2y=-2-4x=-2-12=-14 => y=-7

Hence answer x=3, y=-7

4x+2y=-2

substract the second equation from the first:

3x=9 => x=3

from the second equation of the system 2y=-2-4x=-2-12=-14 => y=-7

Hence answer x=3, y=-7

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