SOLUTION: 3x=5-4z X+y+z=5 Y=2z

Question 925711: 3x=5-4z
X+y+z=5
Y=2z
Found 2 solutions by Fombitz, TimothyLamb:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

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Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
3x=5-4z
x+y+z=5
y=2z
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put the system of linear equations into standard form
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3x + 4z = 5
x + y + z = 5
y - 2z = 0
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = -1
y = 4
z = 2
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system matrix
3 0 4
1 1 1
0 1 -2
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inverse of system matrix
0.6 -0.8 0.8
-0.4 1.2 -0.2
-0.2 0.6 -0.6
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determinant of system matrix = -5
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
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