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\left\{ \begin{array} { l } { a + b + c + d = 20 } \\ { 3a -2c = 3 } \\ { b + d = 6} \\ { c + b = 8 } \end{array} \right.
⎩
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⎪
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⎨
⎪
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a
+
b
+
c
+
d
=
2
0
3
a
−
2
c
=
3
b
+
d
=
6
c
+
b
=
8
Resolver para a, b, c, d
a = \frac{31}{5} = 6\frac{1}{5} = 6.2<br/>b=\frac{1}{5}=0.2<br/>c = \frac{39}{5} = 7\frac{4}{5} = 7.8<br/>d = \frac{29}{5} = 5\frac{4}{5} = 5.8
a
=
5
3
1
=
6
5
1
=
6
.
2
b
=
5
1
=
0
.
2
c
=
5
3
9
=
7
5
4
=
7
.
8
d
=
5
2
9
=
5
5
4
=
5
.
8
Cuestionario
5 problemas similares a:
\left\{ \begin{array} { l } { a + b + c + d = 20 } \\ { 3a -2c = 3 } \\ { b + d = 6} \\ { c + b = 8 } \end{array} \right.
⎩
⎪
⎪
⎪
⎨
⎪
⎪
⎪
⎧
a
+
b
+
c
+
d
=
2
0
3
a
−
2
c
=
3
b
+
d
=
6
c
+
b
=
8
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⎩
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\left\{ \begin{array} { l } { a + b + c + d = 20 } \\ { 3a -2c = 3 } \\ { b + d = 6} \\ { c + b = 8 } \end{array} \right.
⎩
⎪
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⎪
⎨
⎪
⎪
⎪
⎧
a
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b
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d
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2
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−
2
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=
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