3 years ago

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

2 answers:

Arada [10]3 years ago

8 0

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

5 0

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

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