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OpenStudy (anonymous):
Use the substitution method to solve the following system of equations. 3x + y – z = 2 2x + y + 2z = 8 2x – 3y + z = 21
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OpenStudy (anonymous):
Add First and Third Equation
OpenStudy (anonymous):
3x + y + 2x - 3y = 23 5x -2y =23
OpenStudy (anonymous):
\[x = 3 , y= -4,z = 3\]I just checked it again and I did wrong previously ...Now it is right
OpenStudy (anonymous):
Lol yeah i was really confused. But thank you <3
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