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-3x+11y-7z-4x-\left(-2y\right)-z
To find the opposite of 4x-2y+z, find the opposite of each term.
-3x+11y-7z-4x+2y-z
The opposite of -2y is 2y.
-7x+11y-7z+2y-z
Combine -3x and -4x to get -7x.
-7x+13y-7z-z
Combine 11y and 2y to get 13y.
-7x+13y-8z
Combine -7z and -z to get -8z.
-3x+11y-7z-4x-\left(-2y\right)-z
To find the opposite of 4x-2y+z, find the opposite of each term.
-3x+11y-7z-4x+2y-z
The opposite of -2y is 2y.
-7x+11y-7z+2y-z
Combine -3x and -4x to get -7x.
-7x+13y-7z-z
Combine 11y and 2y to get 13y.
-7x+13y-8z
Combine -7z and -z to get -8z.