# NCERT Solutions for CBSE Class 12 Mathematics ‒ Chapter 4: Determinant (Part X)

NCERT Solutions for CBSE Class 12 Maths Chapter 4 - Determinant (Exercise 4.6) are available here. In this article, you will get solutions for exercise 4.6 from question number 7 to question number 16. These questions can be asked in CBSE Class 12 Maths board exam 2018 and other competitive exams.

*NCERT Solutions for CBSE Class 12th Maths, Chapter 4: Determinant (Exercise 4.5) are given below:*

**Question 7: **

5*x *+ 2*y *= 4

7*x *+ 3*y *= 5

**Solution 7:**

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**NCERT Exemplar CBSE Class 12 Mathematics - All Chapters**

**Question 8:**

2*x *– *y *= –2

3*x *+ 4*y *= 3

**Solution 8:**

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**Question 9:**

4*x *– 3*y *= 3

3*x *– 5*y *= 7

**Solution 9:**

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**Question 10:**

5*x *+ 2*y *= 3

3*x *+ 2*y *= 5

**Solution 10:**

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**Question 11:**

2*x *+ *y *+ *z *= 1

*x *– 2*y *– *z *= 3/2

3*y *– 5*z *= 9

**Solution 11:**

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**Question 12:**

*x* – *y *+ *z *= 4

2*x *+ *y *– 3*z *= 0

*x *+ *y *+ *z *= 2

**Solution 12:**

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**Question 13:**

2*x* + 3*y* +3 *z* = 5

*x *– 2*y *+ *z *= – 4

3*x *– *y ***– **2*z *= 3

**Solution 13:**

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**Question 14:**

*x *– *y *+ 2*z *= 7

3*x *+ 4*y *– 5*z *= – 5

2*x *– *y *+ 3*z *= 12

**Solution 14:**

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**Question 15:**

**Solution 15:**

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**Question 16:**

The cost of 4 kg onion, 3 kg wheat and 2 kg rice is Rs 60. The cost of 2 kg onion, 4 kg wheat and 6 kg rice is Rs 90. The cost of 6 kg onion 2 kg wheat and 3 kg rice is Rs 70. Find cost of each item per kg by matrix method.

**Solution 16:**

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**Download NCERT Solutions for Class 12 Maths - Chapter 4 (Determinant) in PDF format**