# Find X and Y If (4, 3x),(X, -2)(5), (1) = (Y),(8) - Mathematics

#### Question

Find x and y if [(4, 3x),(x, -2)][(5), (1)] = [(y),(8)]

#### Solution

[(4, 3x),(x, -2)][(5), (1)] = [(y),(8)]

[(20 + 3x),(5x - 2)] = [(y), (8)]

Comparing the corresponding elements we get

5x - 2 = 8 => x = 2

20 + 3x = y => y = 20 + 6 = 26

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#### APPEARS IN

Selina Solution for Concise Mathematics for Class 10 ICSE (2020 (Latest))
Chapter 9: Matrices
Exercise 9 (C) | Q 4.1 | Page 129

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Find X and Y If (4, 3x),(X, -2)(5), (1) = (Y),(8) Concept: Multiplication of Matrix.