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coldgirl
[10]
3 years ago
15
-x+2y=9 -7x-2y=-1 Solve each system by elimination
Mathematics
Answer
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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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