SOLUTION: [ 1st number is 4 times a 2nd number, after the 1st number transfers 110 to the 2nd number the 2nd number is 3 times the 1st number. What are the numbers ]
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Question 825419: [ 1st number is 4 times a 2nd number, after the 1st number transfers 110 to the 2nd number the 2nd number is 3 times the 1st number. What are the numbers ] Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
x = 4y
3(x - 110) = (y + 110)
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put the system of linear equations into standard form
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x - 4y = 0
3x - 330 = y + 110
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x - 4y = 0
3x - y = 440
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copy and paste the above linear system in standard form into this matrix-method solver:
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solution:
x = 160
y = 40
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system matrix
1 -4
3 -1
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inverse of system matrix
-0.090909091 0.36363636
-0.27272727 0.090909091
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determinant of system matrix = 11
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