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Find X and Y If Matric [(X,3x),(Y, 4y)] = [(5),(12)] - ICSE Class 10 - Mathematics

Question

Find x and y if [(x,3x),(y, 4y)] = [(5),(12)]

Solution

[(x,3x),(y,4y)][(2),(1)] = [(5),(12)]

=> [(2x + 3x),(2y + 4y)] = [(5),(12)]

=> [(5x),(6y)] = [(5),(12)]

∴ 5x = 15 => x = 3 and 6y = 12 => y = 2

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Solution Find X and Y If Matric [(X,3x),(Y, 4y)] = [(5),(12)] Concept: Matrices Examples.
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