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coldgirl [10]
3 years ago
15

-x+2y=9 -7x-2y=-1 Solve each system by elimination

Mathematics
1 answer:
g100num [7]3 years ago
5 0
X - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me
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