Mathematics
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OpenStudy (kpop4life123):
guys please help
fast!!!!
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OpenStudy (kpop4life123):
What is the value of x in the solution to the following system of equations? (5 points)
x − y = −3
x + 3y = 5
OpenStudy (kpop4life123):
@Luigi0210
OpenStudy (redphantom9):
x + 3y = 5
OpenStudy (caozeyuan):
\[\left[\begin{matrix}1 & -1 & -3 \\ 1 & 3 &5 \end{matrix}\right]\]
OpenStudy (caozeyuan):
\[\left[\begin{matrix}1 & -1 &-3 \\ 0 & 4&8\end{matrix}\right]\]
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OpenStudy (redphantom9):
did i get it right? @Kpop4life123
OpenStudy (caozeyuan):
\[\left[\begin{matrix}1 & -1&-3 \\ 0 & 1&2\end{matrix}\right]\]
OpenStudy (kpop4life123):
i cant put it in because i only have 1 try
OpenStudy (caozeyuan):
now from the second row we have y=2
OpenStudy (redphantom9):
oh ok
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OpenStudy (caozeyuan):
so x+2=-3
OpenStudy (caozeyuan):
x=-5 @Kpop4life123
OpenStudy (redphantom9):
N/A
OpenStudy (kpop4life123):
wait so its both of them or only x=-5
OpenStudy (caozeyuan):
sorry
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OpenStudy (caozeyuan):
x-2=-3
OpenStudy (caozeyuan):
x=-1
OpenStudy (caozeyuan):
my brain thought - is + for some reason
OpenStudy (kpop4life123):
both?
OpenStudy (caozeyuan):
not sure what you are asking for but you have a value for x which is -1, a value for y which is 2, does this answer your questions
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OpenStudy (kpop4life123):
oh ok thanks and yes i was looking for the value of x