Interchange equations 1 and 3.
3x + 4y + z = -9
3x - 3y - z = -8
4x +4z = 27
Obtain an equivalent system by performing the stated elementary operation on the system.?
2014-10-16 1:01 pm
回答 (1)
2014-10-16 1:23 pm
What do you mean by "interchange"?
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