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How to solve 3x+y=-14;-2x-y=9

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How to solve 3x+y=-14;-2x-y=9

asked Dec 3, 2016 15.4k views

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How to solve 3x+y=-14;-2x-y=9

Mathematics
middle-school

Yadav Chetan asked

by Yadav Chetan

7.6k points

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2 Answers

4 votes

3x+y=-14
-2x-y=9
++++++++++++
x=-5
y=1

Pgrzesik answered Dec 6, 2016

8.2k points

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3 votes

This is a set of simultaneous equations.
3x+y=-14
-2x-y=9
Use elimination by addition
x=-5
the substitute for y
y=1

Codo answered Dec 8, 2016

by Codo

7.9k points

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