danashasoleil danashasoleil

29-10-2020
Mathematics

contestada

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?

Respuesta :

ebbread ebbread

02-11-2020

Answer:

the answer is c

Step-by-step explanation:

i just finished the quiz

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Muirheada8 Muirheada8

12-11-2021

He did not eliminate the same variables in steps 1 and 2

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