Mathematics
Mathematics, 14.11.2019 21:31, 0273hdj

Mark is solving the following system.
ſ x+y+z= 2
3x+2y+z=8
4x-y-7z = 16
(1)
(2)
(3)
step 1: he multiplies equation (1) by 7 and adds it to equation (3).
step 2: he multiplies equation (3) by 2 and adds it to equation (2).
gp
which statement explains mark's mistake?

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Answers: 2
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Do you know the correct answer?
Mark is solving the following system.
ſ x+y+z= 2
3x+2y+z=8
4x-y-7z = 16
(1)<...

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