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Name: Provide solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 47 maths textbook solution.
Uploaded: Wed, 2021-08-04 15:30
Description: Provide solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 47 maths textbook solution.

#CBSE 12 Class
#Maths
#RD Sharma Vol. 1 Class 12
#R.D. Sharma
#School
#Determinants

#1.3
#5.2
#5.3
#5.4
#5.5
#5.1
#9.12
#Fill in the blanks
#Very Short Answer type
#Multiple Choice Questions (MCQs)

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Provide solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 47 maths textbook solution.

Answers (1)

Answer: $x = -2$

Hint: Here we use basic concept of determinant of matrix

Given: $\left|\begin{array}{rr} 3 x & 7 \\ -2 & 4 \end{array}\right|=\left|\begin{array}{ll} 8 & 7 \\ 6 & 4 \end{array}\right|$

Solution :

$\begin{aligned} &3 x(4)-[(-2)(7)]=8 \times 4-7 \times 6 \\ &12 x+14=32-42 \\ &12 x=32-42-14 \\ &12 x=-24 \\ &x=-2 \end{aligned}$

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Provide solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 47 maths textbook solution.

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