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Byju's Answer
Standard XII
Physics
Introduction
State True or...
Question
State True or False:
If
x
=
6
a
+
8
b
+
9
c
;
y
=
2
b
−
3
a
−
6
c
and
z
=
c
−
b
+
3
a
; then
x
+
y
+
z
is
6
a
+
9
b
+
4
c
.
A
True
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B
False
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Solution
The correct option is
A
True
W
e
c
a
n
d
i
r
e
c
t
l
y
a
d
d
t
h
e
c
o
e
f
f
i
c
i
e
n
t
s
o
f
l
i
k
e
v
a
r
i
a
b
l
e
s
,
x
=
6
a
+
8
b
+
9
c
;
y
=
2
b
−
3
a
−
6
c
;
z
=
c
−
b
+
3
a
x
+
y
+
z
=
6
a
+
9
b
+
4
c
Suggest Corrections
0
Similar questions
Q.
State True or False:
If
x
=
6
a
+
8
b
+
9
c
;
y
=
2
b
−
3
a
−
6
c
and
z
=
c
−
b
+
3
a
; then
2
x
−
y
−
3
z
is
6
a
+
17
b
+
21
c
.
Q.
If x=6a+8b+9c;y=2b-3a-6c and z=c-b+3a ; find
(i) x+y+z (ii) x-y+z
(iii) 2x-y-3z (iv) 3y-2z-5x
Q.
State true or false
(
a
−
2
b
+
5
c
)
(
a
−
b
)
−
(
a
−
b
−
c
)
(
2
a
+
3
c
)
+
(
6
a
+
b
)
(
2
c
−
3
a
−
5
b
)
=
19
c
a
−
37
a
b
−
19
a
2
Q.
Solve the following equations:
x
2
+
y
2
+
z
2
=
21
a
2
,
y
z
+
z
x
−
x
y
=
6
a
2
,
3
x
+
y
−
2
z
=
3
a
.
Q.
State true or false:
If
a
x
=
b
,
b
y
=
c
and
c
z
=
a
, then
x
y
z
=
1
.
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