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Ernesto Rangel
Mathematics
16 September, 10:41
Y=2x+9
y=6-x
what is the solution?
+2
Answers (
1
)
Kara
16 September, 10:46
0
Step-by-step explanation:
y=2x+9
y=6-x
(y-2x=9) (-1)
y+x=6
-y+2x=-9
y+x=6
3x=-3
x=-3/3=-1
sub x=-1 in eq 1
y-2 (-1) = 9
y+2=9
y=9-2=5
so (-1; 5) is the only solution for this system
(hope it's correct)
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