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DochEvi [55]
3 years ago
7

-1x-9y=13 -1x+7y=-19

Mathematics
1 answer:
Olegator [25]3 years ago
6 0
-1x=13+9y
(13+9y)+7y=-19
13+16y=-19
16y=-6
•Y=6/16
-1x-(9•6/16)=13
-1x-3.375=13
-1x=16.375
•X=-16.375
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