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–30–
=
Math
=
Math
#068
X – Y
+ Z = 2
X + Y
– Z = 0
–X + Y
+ Z = 4
N
3
(EQN)
2
(a
n
X+b
n
Y+c
n
Z=d
n
)
Math
1=
y
1=
1=
2=
Math
1=
1=
y
1=
0=
y
1=
1=
1=
4=
=
Math
c
Math
c
Math
MA
TH
1
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