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Giovanna Ellis
Mathematics
Yesterday, 21:47
How do you solve the system?
y=9-2x
x+5y=0
+2
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Kylie Herring
Yesterday, 21:55
0
Well, so the x+5y = 0 you can make this into x=-5y and then plug this in into (y=9-2x) the - 2x, which these would become y=9-2 (-5y) simplify and equals to y=9+10y. Then you simplify much smaller y=-9. Now that you have the y number you just plug this in into x=-5y, which these becomes x=-5 (-9) and the answer is x=45. At the end you just need to find the x and y, so the answer is x=45 and y=-9. Hopefully this would make this much easier to you.
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Briana Holmes
Yesterday, 22:03
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I disagree because if you plug 45 into the x value on y=9-2x you don't get - 9. But if x=5 and y = - 1 then the equations make sense.
Y=9-2x
-1=9-2 (5)
-1=9-10
X+5y=0
5+5 (-1) = 0
5-5=0
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