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Let and . If , find the value of…
MATHEMATICS · Single correct · CBSE · Mathematics · Matrices · Matrices
Problem
Let
A
=
[
x
+
2
5
7
9
]
A = \begin{bmatrix} x+2 & 5 \\ 7 & 9 \end{bmatrix}
A
=
[
x
+
2
7
5
9
]
and
B
=
[
6
5
7
y
−
3
]
B = \begin{bmatrix} 6 & 5 \\ 7 & y-3 \end{bmatrix}
B
=
[
6
7
5
y
−
3
]
. If
A
=
B
A = B
A
=
B
, find the value of
x
+
y
x + y
x
+
y
. (a) 10 (b) 14 (c) 16 (d) 18
Related theory
Matrices
Matrix operations
Equality of matrices
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