- #1

- 590

- 0

for example, if i have

2x+y=5

x+z=2

3x+y+z=7

is there any way i can get a solution of

x=x

y=5-2x

z=2-x

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- Thread starter Dell
- Start date

- #1

- 590

- 0

for example, if i have

2x+y=5

x+z=2

3x+y+z=7

is there any way i can get a solution of

x=x

y=5-2x

z=2-x

- #2

The Electrician

Gold Member

- 1,283

- 169

Code:

```
z y x
[ 0 1 2 ]
[ 1 0 1 ]
[ 1 1 3 ]
```

Then augment it:

Code:

```
z y x
[ 0 1 2 5 ]
[ 1 0 1 2 ]
[ 1 1 3 7 ]
```

Then you need to calculate the Row Reduced Echelon Form:

Code:

```
z y x
[ 1 0 1 2 ]
[ 0 1 2 5 ]
[ 0 0 0 0 ]
```

From this you can see that x=x (bottom row), and y = 5 - 2x (second row) and z = 2 - x (first row).

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