add x-3y-z, -3x-2y -z 6y+4z
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Answer:
2x+5y+4z
Step-by-step explanation:
x-3y+z-3x+2y-z+6y+4z
x-3x-3y+2y+6y+z+4z-z
2x-3y+8y+5z-z
2x+5y+4z
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