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Vaughn Key
Mathematics
17 December, 10:04
7x + 14 y = - 14
8x + 7y=-25
+1
Answers (
1
)
Cesar
17 December, 10:18
0
x=4
y=1
Step-by-step explanation:
7x + 14y = - 14
-2 / 8x + 7y = - 25 (multiple it with - 2 then add it with other equation)
7x + 14y = - 14
-16x - 14y = 50
-9x = 36
x = - 4
put the value in its place for the first equation
7 • - 4 + 14y = - 14
14y = - 14 + 28
y = 1
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