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Finite Math
Solve by Substitution x+3y+6z=20 , 2x-3y+3z=4
x
+
3
y
+
6
z
=
20
,
2
x
-
3
y
+
3
z
=
4
Step 1
x
+
3
y
+
6
z
=
20
,
2
x
-
3
y
+
3
z
=
4
[
x
2
1
2
√
π
∫
x
d
x
]
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