x + y + z = 7
x - y + 2z = 7
5x + y + z = 11
On sbtracting first equation from third equation, we will get:
4x = 4
x = 4/4 = 1
On putting the value of x in first two equations, the new equations will be:
y + z = 6
-y + 2z = 6
On adding above two equations:
3z = 12
z = 4
Hence,
y + 4 = 6
y = 2
Therefore,
The solution will be (1, 2, 4)
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