Row Operations for Matrices?

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Row Operations for Matrices?

x+y=8
x-y=4

2006-11-13 11:56:58 · 2 answers · asked by jessiebabie824 2 in Science & Mathematics ➔ Mathematics

2 answers

is like using the equations. to eliminate x multiply the first equation by -1 and add it to the second equation:

x+y=8
-2y = -4

Then use the second equation to eliminate y from the first:
x = 6
-2y=-4

ie,
x=6
y=2

2006-11-13 12:04:45 · answer #1 · answered by modulo_function 7 · 0⤊ 0⤋

x=6
y=2

2006-11-13 19:59:19 · answer #2 · answered by Silas 2 · 0⤊ 0⤋