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Given a = (1,1),(-2, 0) and B = (2, -1), (1, 1)Solve for Matrix X 3x + B + 2a = O - Mathematics

Sum

Given `A = [(1,1),(-2, 0)]` and `B = [(2, -1), (1, 1)]` Solve for matrix X

3X + B + 2A = O

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Solution

3X + B + 2A = O

3X = -2A - B

`3X = -2[(1,1),(-2, 0)] - [(2, -1),(1, 1)]`

`3X = [(-2,-2),(4, 0)] - [(2, -1), (1,1)]`

`3X = [(-4, -1),(3, -1)]`

`X = [((-4)/3, (-1)/3),(1, (-1)/3)]`

Concept: Addition and Subtraction of Matrices
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Selina Concise Maths Class 10 ICSE
Chapter 9 Matrices
Exercise 9 (B) | Q 8.2 | Page 122
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