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docker41 [41]
2 years ago
12

7x+2y=-19 and -x+2y=21

Mathematics
1 answer:
Fittoniya [83]2 years ago
7 0
Subtract the 2 equations

     7x+2y=-19
-    -x+2y = 21
--------------------------
     8x +0y=-2

x= -1/4
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