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Mathematics, 29.10.2020 21:10 mathman783

Mark is solving the following system. X+y+Z= 2(1)

3x+2y+z=8 (2)

4x-y-Tz= 16 (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)

Which statement explains Mark's mistake?

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Mark is solving the following system. X+y+Z= 2(1)

3x+2y+z=8 (2)

4x-y-Tz= 16...
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