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Mathematics
Dutchess
27 April, 15:41
15. x - y = 4
2x+y=5
+2
Answers (
1
)
Cloe Duarte
27 April, 19:03
0
x = 3, y = - 1
Step-by-step explanation:
1) x - y = 4
2x + y = 5
2) 3x = 9
3) x = 3 (9/3)
4) 3 - y = 4
(x - y = 4)
5) - y = 1 (4-3)
6) y = - 1
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