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Byju's Answer
Standard VIII
Mathematics
Solving Equations with Variables on Both Sides
If A = 4 x ...
Question
If
A
=
4
x
−
6
y
B
=
5
x
+
4
y
C
=
3
y
−
3
c
,
then find the value of
i)
A
+
B
−
C
ii)
2
A
−
3
B
+
4
C
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Solution
A
=
4
x
−
6
y
,
B
=
5
x
+
4
y
,
C
=
3
y
−
3
c
(
i
)
A
+
B
−
C
=
4
x
−
6
y
+
5
x
+
4
y
−
3
y
+
3
c
=
9
x
−
5
y
+
3
c
(
i
i
)
2
A
−
3
B
+
4
C
=
8
x
−
12
y
−
15
x
−
12
y
+
12
y
−
12
c
=
−
7
x
−
12
y
−
12
c
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Similar questions
Q.
If
a
= 3
x
− 5
y
,
b
= 6
x
+ 3
y
and
c
= 2
y
− 4
x
, find
(i)
a + b − c
; (ii) 2
a
− 3
b
+ 4
c
.