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Mathematics
Soren Huerta
5 March, 10:14
X + y = - 7
-x + 4y = 17
whats is x and y
+2
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2
)
Cheerio
5 March, 11:48
0
X+y=-7
y = - 7-x
-x+4 (-7-x) = 17
-x-28-4x = 17
-5x-28=17
-5x=17+28
-5x=45
x = - 9
y = - 7 - (-9)
y = - 7+9
y=2
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Jadiel Reeves
5 March, 12:20
0
Answer:X=-9
Y=2
Step-by-step explanation:
X+y=-7
-X+4Y=17
X=-7-y
-X+4Y=17
X=-7-Y
- (-7-Y) + 4Y=17
X=-7-Y
7+Y+4Y=17
5Y+7=17
5Y=17-7
5Y=10
Y=10:5
Y=2
So,
X=-7-Y
X=-7-2
X=-9
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