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Question 828601: One number is 7 times another number. If the sum of the two numbers is 216, find the numbers.
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! ---
x = 7y
x + y = 216
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put the system of linear equations into standard form:
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x - 7y = 0
x + y = 216
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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 = 189
y = 27
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system matrix
1 -7
1 1
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inverse of system matrix
0.125 0.875
-0.125 0.125
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determinant of system matrix = 8
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