Is this formula wrong

│x+2y│+│2x+y│=0
therefore
│x+2y│=0,│2x+y│=0
x+2y=0
2x+y=0
therefore
x=y=0
sure

The value of | x | - 1 of X squared + 2x-3 is 0. Find the value of X

x=-1
It is required that x ^ + 2x-3 ≠ 0 and | x | - 1 = 0

If the square of [2x-1] + (x + y + 1) is 0, what is the value of 1 / 2 x of Y

From Formula 1, we can get 2x-1 = 0, x + y + 1 = 0
So: x = 1 / 2, y = - 3 / 2
So: 1 / Y-X / 2 = - 11 / 12

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