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Mathematics
Finnegan Bartlett
17 May, 19:50
X=3
5x+4y=-9
-x+4y-2z=-25
+1
Answers (
1
)
Charity
17 May, 21:25
0
y=-6 z=-1
Step-by-step explanation:
5 (3) + 4y=-9
15+4y=-9
-15. - 15
4y=-24
/4. / 4
y=-6
-x+4y-2z=-25
-3+4 (-6) - 2z=-25
-3+-24-2z=-25
-27-2z=-25
+27. + 27
-2z=2
/-2. / -2
z=-1
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