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The sum of 2 numbers is 102. if their difference is 48, find the 2 numbers using matrices

0 votes
Define the variables. Write a system of equations. Write matrix equation. Solve
asked Nov 16, 2013 in TRIGONOMETRY by payton Apprentice

1 Answer

0 votes

Let required numbers = x,y

The sum of two numbers is x+y = 102 -------------> (1)

The difference of two numbers is x-y = 48 -----------> (2)

Convert the equations in to matrices form.

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Apply matrice inverse formula image.

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So the required numbers are x = 27, y = 75.

answered Nov 16, 2013 by william Mentor

Check your solution, typo mistake in 15 th line.

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Required numbers are x = 75 and y = 27.

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