SOLUTION: Solve x+y=50000 and 0.1x+0.2y=5250 using argumented matrix

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Question 1177305: Solve x+y=50000 and 0.1x+0.2y=5250 using argumented matrix
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%2By=50000+
+0.1x%2B0.2y=5250


Your matrix

matrix%282%2C3%2C1%2C1%2C50000%2C%0D%0A0.1%2C0.2%2C5250%29

Find the pivot in the 1st column in the 1st row

matrix%282%2C3%2C%0D%0A1%2C1%2C50000%2C%0D%0A0.1%2C%090.2%2C%095250%29

Eliminate the 1st column

matrix%282%2C3%2C1%2C%091%2C%0950000%2C%0D%0A0%2C%090.1%2C%09250%29


Make the pivot in the 2nd column by dividing the 2nd row by 0.1


matrix%282%2C3%2C%0D%0A1%2C%091%2C%0950000%2C%0D%0A0%2C%091%2C%092500%29


Eliminate the 2nd column
matrix%282%2C3%2C%0D%0A1%2C%090%2C%0947500%2C%0D%0A0%2C%091%2C%092500%29

Solution set:

x+=+47500
y+=+2500