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Class 12
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If A and B are matrices of order 3 Γ— 𝑛 and π‘š Γ— 5 respectively, then find the order of matrix 5A – 3B, given that it is defined.

If A and B are matrices of order 3 x n and m Γ— 5 respectively, then

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Question 4 If A and B are matrices of order 3 Γ— 𝑛 and π‘š Γ— 5 respectively, then find the order of matrix 5A – 3B, given that it is defined. The Order of matrices A and B are 𝐴_(3 Γ— 𝑛) and 𝐡_(π‘š Γ— 5) To find 5A βˆ’ 2B, The order of matrix A and B must be the same Thus, 3 Γ— n = m Γ— 5 Thus, n = 5 Therefore, order of (5A βˆ’ 2B) is 3 Γ— 5

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