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  • Please Solve RD Sharma Class 12 Chapter 4 Algebra of Matrices Exercise Very Short Asnwer Question 48 Maths Textbook Solution.

Please Solve RD Sharma Class 12 Chapter 4 Algebra of Matrices Exercise Very Short Asnwer Question 48 Maths Textbook Solution.

Answers (1)

Answer: y=2

Hint: Here we use the basic concept of union algebraic matrix.

Given: \begin{bmatrix} x & x-y\\ 2x+y& 7 \end{bmatrix}=\begin{bmatrix} 3 & 1\\ 8 & 7 \end{bmatrix}

Solution:

Here both are 2\times2  matrix

So,

\! \! \! \! \! \! x=3\; \; \; \; ......(i)\\\\x-y=1\\\\3-y=1[From eqn (i)]

3-1=y

y=2                ...(ii)

\rightarrow Let's check both value

2x+y=8

LHS = 2x+y

=2\left ( 3 \right )+2

=6+2

=8

=RHS

Posted by

infoexpert27

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