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Byju's Answer
Standard VIII
Mathematics
Addition and Subtraction of Algebraic Expression
Add : (x+y ...
Question
Add : (x+y− 2z), (2x−y+ 3z) and (−x+ 3y+ 5z).
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Solution
x
+
y
-
2
z
+
2
x
-
y
+
3
z
+
-
x
+
3
y
+
5
z
=
x
+
y
-
2
z
+
2
x
-
y
+
3
z
-
x
+
3
y
+
5
z
=
x
+
2
x
-
x
+
y
-
y
+
3
y
-
2
z
+
3
z
+
5
z
=
2
x
+
3
y
+
6
z
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Q.
Solve for x, y and z in the given system of equations using Elimination :
x
=
3
z
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2
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7
x
−
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=
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Q.
14. x-y+2z = 73x + 4y-5z =-52x-y+3z = 12
Q.
The system
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y
−
2
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=
3
,
3
x
+
y
+
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z
=
7
and
2
x
+
3
y
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=
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has:
Q.
The system 2x+3y+z=5,3x+y+5z=7,x+4y-2z=3 has
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Solve the system of equations, using matrix method
x
−
y
+
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=
7
,
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4
y
−
5
z
=
−
5
,
2
x
−
y
+
3
z
=
12
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