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Byju's Answer
Standard VIII
Mathematics
Addition and Subtraction of Algebraic Expression
What should b...
Question
What should be added to
2
x
y
+
3
y
z
+
4
z
x
+
5
x
y
z
to get
x
+
y
+
z
+
2
x
y
+
3
y
z
+
4
z
x
−
x
y
z
?
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Solution
x
+
y
+
z
+
2
x
y
+
3
z
y
+
4
z
x
−
x
y
z
−
(
2
x
y
+
3
y
z
+
4
z
x
+
5
x
y
z
)
=
x
+
y
+
z
−
6
x
y
z
should be added
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1
Similar questions
Q.
What should be added to
x
y
−
3
y
z
+
4
z
x
to get
4
x
y
−
3
z
x
+
4
y
z
+
7
?
Q.
Mark the correct alternative in the following question:
​What should be added to xy + yz + zx to get
-
xy
-
yz
-
zx?
(a)
-
2xy
-
2yz
-
2zx (b)
-
3xy
-
yz
-
zx (c)
-
3xy
-
3yz
-
3zx ​ (d) 2xy + 2yz + 2zx
Q.
What should be added to
5
x
2
+
2
x
y
+
y
2
to get
3
x
2
+
4
x
y
?
Q.
Solve the following equations:
x
2
+
y
2
−
z
2
=
21
,
3
x
z
+
3
y
z
−
2
x
y
=
18
,
x
+
y
−
z
=
5
.
Q.
Find the product :
(
2
x
−
y
+
3
z
)
(
4
x
2
+
y
2
+
9
z
2
+
2
x
y
+
3
y
z
−
6
x
z
)
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